Suppose that quiz scores in a beginning statistics class have a mean of 6.6 with a standard deviation of 0.6. Using Chebyshev's Theorem, what is the minimum percentage of quiz scores between 4.8 and 8.4

Answers

Answer 1

Answer:

88.89%

Step-by-step explanation:

Calculation for what is the minimum percentage of quiz scores between 4.8 and 8.4

The calculated minimum percentage value of quiz scores between

First step is to calculate the lower k value using this formula

k=(x1−m)/s

Where:

x1 represent first random value 4.8

x2 represent second random value 8.4

m represent mean 6.6

s represent standard deviation 0.6

Let plug in the formula

k=(4.8−6.6)/0.6

k=−1.8/0.6

k=−3

Second step is to calculate the upper k value

k=(x2−m)/s

k=(8.4−6.6)/0.6

k=1.8/0.6

k=3

Now let calculate the minimum percentage

Using this formula

Minimum percentage=1−1/k^2

Let plug in the formula

Minimum percentage=1−1/3^2

Minimum percentage=1−1/9

Minimum percentage=1−0.1111

Minimum percentage=0.8889*100

Minimum percentage=88.89%

Therefore the minimum percentage of quiz scores between 4.8 and 8.4 is 88.89%

Answer 2

Answer:

75%

Step-by-step explanation:

5.2−6.40.6=−2  and 7.6−6.40.6=2.

This means that 5.2 lies 2 standard deviations below the mean and 7.6 lies 2 standard deviations above the mean.

According to Chebyshev's Theorem, at least 75% of data values lie within 2 standard deviations of the mean.

Therefore, we can say that 75% is the minimum percentage of quiz scores between 5.2 and 7.6.


Related Questions

plss anyone help me with this please! can you say all the answers at once?

Answers

1. (23+10)+8
2. 3 thousands= 3,000 ones
3. three hundred thousandths
4. 8.973 > 0.897
5. 33.036 rounded to the nearest tenth is 33
6. they are more pepperoni pizza
7. 822 boxes
8. 1/12
9. 8/5
10. 24.68

Write an equation of the locus of all points equidistant from the x axis and the y axis and whose coordinates have the opposite signs.

Answers

Answer:

y=-x

Step-by-step explanation:

Since the y-axis and x-axis are intersecting lines then you need to apply the locus of intersecting lines which would be the angle bisector and since the problem is asking for the opposite signs you need to make it -x instead of x.

Hope this helps

:)

What property is shown in the example below?

(x3 + 2 x) + x = x3 + (2x + x)

A. Identity
B. Distributive
C. Commutative
D. Associative

Answers

Answer:

Associative

Step-by-step explanation:

D is the correct answer.

I need help with this

Answers

Answer:

x = 24.52

Step-by-step explanation:

Since this is a right triangle, use Pythagorean Theorem to solve for the hypotenuse.

Pythagorean Theorem: a² + b² = c²

24² + 5² = x²

576 + 25 = x²

601 = x²

√601 = x

Julie started with 20 pieces of gum and gave away x pieces. Conrad started with 35 pieces of gum and gave away twice as many pieces as Julie did.

How many pieces of gum did Julie give away if they had the same number of pieces of gum left?

Answer Choices : A. 18 , B. 5, C. 15, D. 8

Answers

Answer:

15

Step-by-step explanation:

Use the Distributive Property to expand 2 (-3x + 5).​

Answers

Answer:

-6x+10

Step-by-step explanation:

The distributive property states that multiplying each term will yield the same product as multiplying the sum. This means to expand this expression multiply both addends by 2 then add together. So, the new expression is, 2 * -3x + 2 * 5, which simplifies to -6x+10.

Answer:

Step-by-step explanation:

-6x+10

Two cuboids have the same surface area

one is (1 , a , 9) and the other is (2 , a , 7)

what is a?

Answers

Answer:

a = 5

Step-by-step explanation:

Surface Area of a Cuboid

Given a cuboid of dimensions x,y, and z, the surface area is:

A = 2xy + 2yz + 2xz

The first cuboid of dimensions 1,a,9 has a surface area of:

A1 = 2a + 18a + 18 = 20a + 18

The first cuboid of dimensions 2,a,7 has a surface area of:

A2 = 4a + 14a + 28 = 18a + 28

Both areas are equal, thus:

20a + 18 = 18a + 28

Rearranging:

20a - 18a = 28 - 18

2a = 10

a = 5

A 552 ​-inch is cut into two pieces. One piece is three times the length of the other. Find the length of the shorter piece.

Answers

Answer: 138 inches

Step-by-step explanation:

138*3=414inches=Length of larger piece

414/3=138 inches=Length of smaller piece

414+138=552 inches

Emily paid $3.84 in sales tax on an item that cost $64.00 before tax. At that rate, how much would be paid in sales tax for an item that cost $82.00?

Answers

Answer:

8% tax rate & $ 4.40

Step-by-step explanation:

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Evaluate: 8 * 6+ (12.- 4) = 2

Answers

Answer:

This is a false equation

Step-by-step explanation:

As pointed out, you lose if the pile has 1, 6, 11 or 16 sticks. How many sticks are needed in the next two piles for you to lose

Answers

Answer:

21 and 26 totaling 47sticks

Step-by-step explanation:

Th number of sticks form an arithmetic progression

1, 6, 11, 16...

The nth term of an arithmetic progression is expressed as;

Tn = a+(n-1)d

a is the first term = 1

d is the common difference

d = 6-1 = 11-6 = 5

n is the number of terms

The next two terms are the fifth and sixth term

T5 = 1+(5-1)5

T5 = 1+4(5)

T5 = 1+20

T5 = 21

T6 = 1+(6-1)5

T6 = 1+5(5)

T6 = 1+25

T6 = 26

Hence the number of sticks needed in the next two piles are 21 and 26 totaling 47sticks

Suppose you have a population in which 60% of the people approve of gambling. Is the value 0.60 a parameter or a statistic

Answers

Answer:0.60 is a parameter .

Step-by-step explanation:

In statistics, a parameter is a number that summarize the data for a whole population.

On the other hand , statistic gives a measure for sample of population.

Given: We have a population in which 60% of the people approve of gambling.

60% = 0.60

Since it is a measure for the population , it is denoted as population parameter.

Hence, 0.60 is a parameter not statistic.

At a photography contest, entries are scored on a scale from 1 to 100. At a recent contest with 1,000 entries, a score of 68 was at the 77th percentile of the distribution of all the scores. Which of the following is the best description of the 77th percentile of the distribution?
a. There were 77% of the entries with a score less than 68.
b. There were 77% of the entries with a score greater than 68.
c. There were 77% of the entries with a score equal to 68.
d. There were 77 entries with a score less than 68.

Answers

There were 77% of the entries with a score less than 68. Therefore, the correct answer is option A.

Given that, at a recent contest with 1,000 entries, a score of 68 was at the 77th percentile of the distribution of all the scores.

A score X being in the xth percent of a distribution means that x% of the scores are below X and 100 – x% of the scores are above X.

In this question, we have that:

A score of 68 is in the 77th percentile of the distribution.

This means that 77% of the scores are below 68, and 100 – 77 = 23% of the scores are above 68.

Therefore, the correct answer is option A.

To learn more about the normal distribution visit:

https://brainly.com/question/14916937.

#SPJ12

i need help plss dont lie

Answers

Answer:

A x B = 5/6 x 3/4 = 15/24

Answer = 15/24

Step-by-step explanation:

Answer:

We are asked to find the area of the rectangle that has side lengths of 3/4 yard and 5/6 yard.

We know that area of rectangle is width times length.

To find the area of the given rectangle we will multiply both side length as:

Area of regatangle = width x Lenghth

Area of regtangle = 3/4 x 5/6 yard to the 2 power

Area of regtangle = 1/4 x 5/2 yard to the 2 power

Area of regtangle = 1 x 5/ 4x2 yard to the 2 power

Area of regtangle = 5/8 yard to the 2 power

Therefore, the area of the given rectangle would be 5/8 square yards.

complete the ratio table​

Answers

15:15

36:60

54:90

Hope it helps~

Which is the graph of g(x) = 2^x-1 + 3?

Answers

Answer:

gave no examples.. this is what I got

Step-by-step explanation:

1.
4.ft.
6 ft
5 ft
4 ft

Answers

Answer: And the 4 ft 5 ft 6 ft 4 ft

Step-by-step explanation:

Answer:

Your answer will be 4ft.  Please give brainlest

Step-by-step explanation:

find the length of AB​

Answers

Answer:

ICE CREAMZ

Step-by-step explanation:

How many square meters is the area of ​​a square field with a side of 400 cm?​

Answers

Answer:

Easy think, a square has 4 equal sides and if each side is 400 just multiply 400 x 4 = 1600

Step-by-step explanation:

hope this helps

In the figure below, k || o. Find the values of y and z.

Answers

Answer:

y = 112

z = 27

Step-by-step explanation:

Alright,

So we know that a straight line adds up to 180. And looking at the figure, it looks like 68 + y = 180 if you do some visualization.

So, we can already calculate y.

y = 180 - 68

y = 112

Now we find z. z here is represented in an expression. We can see that y and the expression z is in are congruent to each other which means they will equal each other. And since we know that y = 112, we know that the expression z is in is also equal to 112.

So we set up an equation like so:

112 = 3z + 31

And start to simplify:

81 = 3z

Finally we divide:

27 = z

Therefore, z is 27

WILL MARK BRAINLIEST

Which graph represents the solution set of -2y > 7x + 4?

Answers

we have

----> inequality A

The solution of the inequality A is the interval ------> [-1,∞)

-------> inequality B

The solution of the inequality B is the interval ------> (-∞,7]

The solution of the compound inequality is

[-1,∞) ∩ (-∞,7]=[-1,7]

therefore

the answer in the attached figure

divide by -2 (flip the sign!!) on each side to get y<-7/2x-2 graph the "intercepts" (0,-2) and (-4/7,0) with a dotted line.

pick a test point (0,0) and plug into the equation to determine which side to shade 0<-7/2(0)-2
0<-2 is false so shade below the line

If point A is located at -8 on a number line and point B is located at 3 what is the distance between the two points?​

Answers

Answer:

5

Step-by-step explanation:

you just have to subtract 3 by 8 and then you get 5

Answer:

11

Step-by-step explanation:

You are finding the space between them so we are going to make them absolute values and then add them:

|-8| + |3| = 8+3 = 11

THIS IS THE 8th TIME I HAD TO ASK THIS IVE WASTED 80 POINTS


PLEASE I REALLY NEED HELP!! I HAVE NO IDEA WHAT IM DOING PLS ANSWER THIS!!!

Mike was ordering pizzas for a party. He ordered triple the number of sausage pizzas as cheese pizzas. He ordered twice as many pepperoni pizzas as cheese. He also requested a fourth as many supreme pizzas as pepperoni. If he paid for 39 pizzas total, how many of each type of pizza did he order? Write an equation or draw a diagram to support your answer.

Answers

Answer: Number of cheese pizzas = 6

Number of sausage pizzas =18

Number of pepperoni pizzas = 12

Number of supreme pizzas =  3

Step-by-step explanation:

Let x= Number of cheese pizzas.

Number of sausage pizzas = 3x

Number of pepperoni pizzas = 2x

Number of supreme pizzas = [tex]\dfrac{2x}{4}=\dfrac{x}{2}[/tex]

Total pizzas = [tex]x+3x+2x+\dfrac{x}{2}=39[/tex]

[tex]\Rightarrow\ \dfrac{13x}{2}=39\\\\\Rightarrow\ x=\dfrac{39}{13}\times2\\\\\Rightarrow\ x=6[/tex]

Number of cheese pizzas = 6

Number of sausage pizzas = 3(6) = 18

Number of pepperoni pizzas = 2(6) = 12

Number of supreme pizzas =  [tex]\dfrac{12}{4}=3[/tex]

The fairs train ride covers a distance of 3 miles in 20 minutes what is the speed for the ride in miles per hour?

Answers

Answer:

20/60=1/3

R= d/t

R=3/ [tex]1/3[/tex]

R=9

Step-by-step explanation:

If a number reads the same forwards or backwards, like 404 and 1221, then it's called a palindrome. The first palindrome greater than 9999 is 10 001. What is the fifth palindrome greater than 9999?

Answers

Answer:

The fifth Palindrome greater than 9999 is 10,401

Step-by-step explanation:

Here, we want to get the fifth palindrome greater than 9999

To get this, we are going to write out the palindromes that are greater than 9999

we have them as follows to the fifth

10,001

10,101

10,201

10,301

10,401

So the fifth Palindrome greater than 9999 is 10,401

A woman purchased a used car for $3,000. She decided to sell the car for 20% above her purchase price. She could not sell the car so she reduced asking price by 20%. If she sells the car at the reduced price, she will have a profit or a loss or will she break even?

10.1 #17

Answers

Answer:

She will have a loss of $ 120

Step-by-step explanation:

Purchase price of car = $ 3000

20% of 3000 = [tex]\frac{20}{100}*3000[/tex]

                     = 20 * 30

                    = $ 600

Selling price = 3000 + 600 = $ 3600

Reduction price = 20%  of 3600

                          [tex]\frac{20}{100}*3600[/tex]

                       = 20  * 36

                       = $ 720

Current selling price after reduction = 3600 - 720

                                                            = $ 2880

Loss = 3000 - 2880

        = $ 120

She will break even
3000x20%=600. Which is above her purchase price total 3600 and she couldn’t sell.
She reduced the asking price(3600) by 20%
Which would -600. Now she’s asking 3000 what she paid.
Hope this helps

1 1/7 over 3/5

Please help

Answers

1 19/21 answer to your problem

This recipe makes 20 flapjacks.
How much of each ingredient is needed to make 50 flapjacks by following this
recipe?
Recipe: Makes 20 flapjacks
140 g margarine
120 g sugar
100 ml syrup
240 g oats
50 g raisins

Answers

Divide each measurement by 20 (to find the amount for 1 flapjack), then multiply that by 50 for the amount for 50 flapjacks

Helpppppp meeee please and thank you

Answers

the answer is dddddddddddd

simplify 8 + 24 ÷ 2 3

Answers

The answer to that question is 11

Answer:

B.) 11

Step-by-step explanation:

Hope this helped!

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