find the value of the product mentally.​

Answer:

(a) It implies that if many samples of the members of the fitness club were selected and many 95% confidence intervals were constructed, the true proportion of all members of the fitness club who would quit would be captured by about 95% of the intervals.

(b) It implies that there is a 95% confidence that the true proportion of all members of the fitness club who would quit if there is an increase in the fee will be captures by the interval 0.105 – 0.225 (i.e. calculated as 0.18 – 0.075 = 0.105 and 0.18 + 0.075 = 0.225).

(c.) No, as there are plausible values above 20 as it is not all the intervals that are below 20. The implication of this is that there is a possibility that more than 20% would quit.

(d) The implication of the condition is that the distribution of the sample is approximately normal. This gives the opportunity to do estimations. However, the it will not be possible to estimate the 2 critical values if the distribution is not approximately normal. .

Step-by-step explanation:

Note: This question is not complete. The complete question is therefore provided before answering the question as follows:

Members at a popular fitness club currently pay a $40 per month membership fee. The owner of the club wants to raise the fee to $50 but is concerned that some members will leave the gym if the fee increases. To investigate, the owner plans to survey a random sample of the club members and construct a 95% confidence interval for the proportion of all members who would quit if the fee was raised to $50.

(a) Explain the meaning of "95% confidence" in the context of this study.

(b) After the owner conducted the survey, he calculated the confidence interval to be 0.18 +/- 0.075. Interpret this interval in the context of the study.

(c.) According to the club’s accountant, the fee increase will be worthwhile if fewer than 20% of the members quit. According to the interval from part (b) can the owner be confident that the fee increase will be worthwhile? Explain.

(d) One of the conditions for calculating the confidence interval in part (b) is that np ≥ 10 and n(1 – p) ≥ 10. Explain why it is necessary to check this condition.

The explanation of the answer is now provided as follows:

(a) Explain the meaning of "95% confidence" in the context of this study.

It implies that if many samples of the members of the fitness club were selected and many 95% confidence intervals were constructed, the true proportion of all members of the fitness club who would quit would be captured by about 95% of the intervals.

(b) After the owner conducted the survey, he calculated the confidence interval to be 0.18 +/- 0.075. Interpret this interval in the context of the study.

It implies that there is a 95% confidence that the true proportion of all members of the fitness club who would quit if there is an increase in the fee will be captures by the interval 0.105 – 0.225 (i.e. calculated as 0.18 – 0.075 = 0.105 and 0.18 + 0.075 = 0.225).

(c.) According to the club’s accountant, the fee increase will be worthwhile if fewer than 20% of the members quit. According to the interval from part (b) can the owner be confident that the fee increase will be worthwhile? Explain.

No, as there are plausible values above 20 as it is not all the intervals that are below 20. The implication of this is that there is a possibility that more than 20% would quit.

(d) One of the conditions for calculating the confidence interval in part (b) is that np ≥ 10 and n(1 – p) ≥ 10. Explain why it is necessary to check this condition.

The implication of the condition is that the distribution of the sample is approximately normal. This gives the opportunity to do estimations. However, the it will not be possible to estimate the 2 critical values if the distribution is not approximately normal.

Answer:

Step-by-step explanation:

Answer:

its (7,6)

Step-by-step explanation:

2x + y = 20

2(7) + 6 = 20

14 + 6 = 20

20 = 20

6x - 5y = 12

6(7) - 5(6) = 12

42 - 30 = 12

12 = 12

Answer:

undefined

Step-by-step explanation:

m= y/x

and x =0

Answer:

It is  undefined slope

Step-by-step explanation:

Answer:

Step-by-step explanation:

let V be the vector.

V=8i-6j

|V|=√(8²+(-6)²)=√(64+36)=√(100)=10

Answer:

D on edg2021

Step-by-step explanation:

Just took the test

Answer:

a. The value of x is [tex]38^{o}[/tex].

b. The value of y is [tex]25^{o}[/tex].

Step-by-step explanation:

a. Applying the vertically opposite principle,

(2x + 5) = (3x - 33)

2x + 5 = 3x - 33

33 + 5 = 3x - 2x

38 = x

⇒ x = [tex]38^{o}[/tex]

b. Sum of angles on a straight line = [tex]180^{o}[/tex]

So that,

(4y - 1) + (3x - 33) = [tex]180^{o}[/tex]

But,

( 3x - 33) = (3x38 - 33)

               = 114 - 33

               = [tex]81^{o}[/tex]

(4y - 1) + [tex]81^{o}[/tex] = [tex]180^{o}[/tex]

4y - 1 = [tex]180^{o}[/tex] - [tex]81^{o}[/tex]

         = [tex]99^{o}[/tex]

4y = [tex]99^{o}[/tex] + 1

    = [tex]100^{o}[/tex]

y = [tex]\frac{100}{4}[/tex]

  = [tex]25^{o}[/tex]

y = [tex]25^{o}[/tex]

The value of x is [tex]38^{o}[/tex], and y is [tex]25^{o}[/tex].

Answer:

After 11years there'll be$602.880

Step-by-step explanation:

Amount after 11years

=$400(1+3.8/100)¹¹

=$602.880

The after 11 years the amount will be $602.880

We have given that,

Ariana invested $400 in an account paying an interest rate of 3.8% compounded monthly.

[tex]A=p(1+r)^n[/tex]

Amount after 11 years,

[tex]P=$400r=3.8[/tex]

[tex]=\frac{3.8}{100} =0.38[/tex]

[tex]=$400(1+3.8/100)^{11}[/tex]

[tex]=$602.880[/tex]

Therefore the after 11 years the amount will be $602.880.

To learn more about future values visit:

https://brainly.com/question/24703884

Answer:

643.08

Step-by-step explanation:

You can use long division or a calculator

Answer:

640

Step-by-step explanation:

(used a calculator)

Answer:

62.5 i think use a calculater i...

divided 25 by 0.4 got 6.25

6.25 times 10 got 62.5

Step-by-step explanation:

done i hope its right sorry if its not

Answer:

i didnt see a screenie

Step-by-step explanation:

Hey there!

The answer is 5x - 3

"five times a number" represents multiplication, so "5x"

"three less" represents subtracting 3, so "-3"

put together we get "5x - 3"

Good luck and have a nice day!

Answer:

5 mins.

Step-by-step explanation:

hope his helps good luck

Answer:

5 minutes

Step-by-step explanation:

Answer:

480.6 ; 440.5, 8 mode values

Step-by-step explanation:

Given that :

Given the data :

486, 358, 395, 759,496, 692, 353, 306

Rearranged data: 306, 353, 358, 395, 486, 496, 692, 759

The mean:

Σx/ n

n = sample size = 8

Σx = sum of all data values = 3845

Mean = 3845 / 8

Mean = 480.6

The median :

0.5(n + 1)th term

0.5(8 + 1) th term

0.5(9)th term

= 4.5term

(4th + 5th term) / 2

(395 + 486) / 2

= 440.5

The mode = most frequently occurring data value ; since all the data values have a frequency of 1, then the number of modes = 8.

Answer:

Correct option A

Step-by-step explanation:

Average rate = 260/4 = 65 mph

It increases by 12mph

So 65+12 = 77 mph

Correct option A

Answer:

Step-by-step explanation:

Answer:

answers below

Step-by-step explanation:

1. 3/10 x 5/3= 15/30 or 1/2

2. 1/10 x 8/5= 8/50

3. 5/8 x 5/4= 25/32

4. 5/12 x 4/3= 20/36

5. 1/4 x 10/9= 10/36

Answer:

1/9

Step-by-step explanation:

Answer:

1/6

Step-by-step explanation:

A cube has six sides

Six probable outcomes

rolling a 2 can only happen on 1 of those outcomes

so 1/6

Answer:

1/6

Step-by-step explanation:

The Answer is 1/6

Answer: Don’t quite understand what you are asking but the Y-Intercept = 15, and the slope would be -7. Hope this helps you

Step-by-step explanation:

Answer:

to represent what-

Step-by-step explanation:

Answer:

The numbers are 1/10 & 11/10

Answer:

yes means yes

Step-by-step explanation:

Answer:

C'D' = 8

Step-by-step explanation:

A'B'C'D' is the figure gotten by multiplying each segment of Quadrilateral ABCD by the scale factor of 4.

To get the length segment of C'D', multiply the length of CD by 4.

CD = 2 units

Therefore, C'D' = 4*2

C'D' = 8

Answer: it was 12 :(

Step-by-step explanation:

I got it wrong on khan academy but then I checked the explanation and it wasn’t 8 but 12.

Answer:

I don't know

Step-by-step explanation:

is there a picture of a graph or anything

Answer:

10/3 or 3 1/3

Step-by-step explanation:

Answer:

(3, 27)

Step-by-step explanation:

I will use substitution method.

y = 30-x

y = 9x

30 -x = 9x

30 = 10x

x = 3

So far we have (3, ?).

Now that we know x, we can plug in x to one of the equation to find y. I will plug it in at the bottom equation.

y = 9(3)

y = 27

Now we know that the solution is (3, 27).

Answer:

a = 4.8

Step-by-step explanation:

9 - 4a + 12 = 6a - 27

21 - 4a = 6a - 27

48 - 4a = 6a

48 = 10a

4.8 = a

Answer:

n=-1

Step-by-step explanation:

.....................

Answer:

around 11,000?

Step-by-step explanation:

The number of ice cream scoops sold from the shop if it is rounded to the nearest a thousand are 12,111 and 11,589.

To write the large number at the nearest round, we use the nearest thousand of the number. The rounded to the nearest thousand of a number makes the calculation easy, and the result to understand batter.

To round a number to nearest thousand, follow the steps below-

An ice cream shop has a sign in their window that says, "We sell 12,000 scoops per month." The number of scoops has been rounded.

The options of this problem are-

The number of scoops sold if they rounded to the nearest thousand. As the nearest number is 11,589 which is less than the 1200 which shows some of the ice cream has been sold.

Also the number 12,111 can be rounded to 12000.

Hence, the number of ice cream scoops sold from the shop if it is rounded to the nearest a thousand are 12,111 and 11,589.

Learn more about the nearest thousand of a number here;

https://brainly.com/question/587947

Answer:

wht is the question

Step-by-step explanation: