Question

An institute conducted a clinical trial of its methods for gender selection. The results showed that 526 of 921 babies born to parents using a specific​ gender-selection method were boys. Use the sign test and a 0.1 significance level to test the claim that the method increased the likelihood of having a boy.

Find the null and alternative hypothesis.

H0:

• p<0.5
• p>0.5
• p=0.5
• p≠0.5

H1:

• p<0.5
• p=0.5
• p≠0.5
• p>0.5

If we consider + to represent a boy, then how many of each sign is there?

Positive Signs:

Negative Signs:

Total Signs:

What is the p-value?  (Round to three decimal places.)

What is the conclusion about the null?

What is the conclusion about the claim?

Please explain how to find the p-value on a TI-84 in this situation. Thank you.

Answer 1