$**$ For "Hypothesis Testing" problem, the related tables must be added to your solution file and

SPSS Output File must also be uploaded with.

$**$ Submissions must be uploaded on Moodle by one of your group members by stating surnames

of each group member.

Good Luck $)$

Q$3.$ A company conducted a survey of residences to assess compliance with the minimum

earthquake preparedness guidelines. The number of houses meeting the minimal preparedness

recommendations for a group of certain $13$ districts in northern Idaho have been presented in the

following table:

a$.$ What is the point estimate of the population mean and standard deviation for number of

houses adhering to the basic preparedness guidelines?

b$.$ Estimate the average number of houses adhering to the basic preparedness guidelines by

giving a $90\%,95\%$ and $99\%$ confidence limit of this estimate.

c$.$ Explain how standard error of the sample distributions, $t-$scores, margin of errors, and

interval widths change based on each confidence level in Part a$.$