3 years ago

Match the expression to its value.

Mathematics

1 answer:

brilliants [131]3 years ago

6 0

Answer:

1 a

2 b

3 c

4 d

Step-by-step explanation:

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What sample size is needed to give a margin of error within plus-or-minus 5% in estimating a population proportion with 90% conf

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Answer: 271.

Step-by-step explanation:

When the prior population proportion of success is not available, then the formula to find the sample size is given by :-

$n=00.25(\dfrac{z_{\alpha/2}}{E})^2$

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Then , the required minimum sample size will be :-

$n=0.25(\dfrac{(1.645)}{0.05})^2=270.6025\approx271$

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Match the expression to its value.​

Match the expression to its value.