You are planning a study to determine if mean height in a population has

changed. The populations mean height in 1920 was 64 inches with a standard

deviation of 4 inches. The study needs a big enough sample to detect a change

of 1% with a power 0.8 and a significance of 0.05. How big should the sample

be?

A 307

B 70

C 69.09

D 306.25

fourth month

step-by-step explanation:

it is the one with the most keychains.

rectangle that is ther answer you

step-by-step explanation:

answer: 0+0=0

step-by-step explanation:

that is the only answer that can make 0

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

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