Note: for this problem, your answer should be rounded to two decimal places. in a particular municipality, it is believed that 25 percent of homes are not properly insulated. in order to test h0: p=.25 vs. ha: p? .25 (where p is the population proportion of homes that are not properly insulated) a random sample of 300 homes was selected. in the sample, it was found that 102 homes were not properly insulated. if the null hypothesis is true, then the z-score for the sample proportion is:

3.6

Step-by-step explanation:

The test statistic for proportion is given by :-

, where p is the population proportion , is the sample proportion and n is the sample size.

Let p be the population proportion of homes are not properly insulated.

As per given , we have

p= 0.25

Sample size : n= 300

In the sample, it was found that 102 homes were not properly insulated.

Then ,

The test statistic for proportion is given by :-

Hence, the  z-score for the sample proportion is: 3.6

for the first question it would be the second answer for the second question it would be the third answer and for the third question it would be the first answer

step-by-step explanation:

step-by-step explanation: