Homework answers / question archive / The mean height of females in a certain country is 66 inches with a standard deviation of 4 inches

The mean height of females in a certain country is 66 inches with a standard deviation of 4 inches

Statistics

Share With

The mean height of females in a certain country is 66 inches with

a standard deviation of 4 inches. Find the height that correspond to a z score of 1. Round your answer to two decimal places, if needed.
-Gender Selection ProblemA company claims when parents use their gender selection method, the chances of having a girl will increase. Assume boy and girl births are equally likely so the proportion of girl births in any population is 50%. In a clinical trial of 121 births for parents who used the gender selection method, 76 were girls.
State the claim, null, and alternative hypothesis.
Claim:
p               [">", "<", "=", "≠"]           0.5
HO:
p              [">", "=", "≠", "<"]           0.5
H1:
p      ["=", "≠", "<", ">"]           0.5


Determine the p-value.
Round your answer to 4 decimal places.


 Using a significance level of 0.01, state the final conclusion regarding the claim.
             
                     ["Fail to reject", "Reject"]            the HO since the p-value is                          
             ["greater than", "less than"]            the significance level α