Ask question

Ask question

All categories

3 years ago

13

People were polled on how many books they read the previous year. How many subjects are needed to estimate the number of books r

ead the previous year within one book with 99% confidence? Initial survey results indicate that sigmaequals12.4 books.

1 answer:

Dmitry_Shevchenko [17]3 years ago

8 0

n = [z*s/E]^2

n = [2.5758*14.1/1]^2 = 1320 (rounded up)

You might be interested in

HELP THIS IS A EMERGENCY please tell me all of it (it’s for my cousin in 5th grade)

kkurt [141]

3) Add 2.82, 3.44, and 4.15. Then round it so it looks like this : #.#

4) Add 0.55, 0.15, 0.40, and 0.05 all together

5) Subtract 0.39 from 0.72.

6 0

3 years ago

Read 2 more answers

-3x - 8 = 50<br> Anyone know how to solve this by elimination?

nikklg [1K]

-14 should be the answer

4 0

3 years ago

Read 2 more answers

Please help it's in math

goldenfox [79]

Answer:

Step-by-step explanation:

area of front face=(12+8)/2 ×8=80 cm²

volume=80×22=1760 cm³

8 0

3 years ago

I need some help please. Select the function that is modeled by the graph.

stellarik [79]

Answer:

C.) y=-3/2x+3

Step-by-step explanation:

The y-intercept (where the line crosses y) is 3 = +3

The line goes down 3 and right 2 = -3 / 2

y = -3/2 + 3

7 0

2 years ago

How much money will you have if you started with $ 50, and put it in an account that earned 9.7% every year for 15 years?

Zielflug [23.3K]

Compound interest:
A=p(1+ $\frac{r}{100}$ $)^{n}$
<span>A=50(1+ $\frac{9.7}{100}$ $)^{15}$
</span>A=50(1.097 $)^{15}$
A=50*4.00958
A= <span>$200.48</span>

3 0

3 years ago