3 years ago

A survey is given to a class, asking about each person's favorite season of

1 answer:

lina2011 [118]3 years ago

4 0

5/10 and 1/2 as they are the same.
Because there are 100 pupils in total.
10 choose summer and 40 choose fall, totalling 50 students out of 100.
=5/10 and 1/2

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Step-by-step explanation:

Formula of Margin of Error for (n<30):-

$E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : n= 22

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Significance level : $\alpha=1-0.90=0.10$

By using the t-distribution table ,

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Standard deviation: $\sigma=4$

Then, we have

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