A builder claims that heat pumps are installed in 70% of all homes being constructed today in a city. Would you agree with this claim if a survey of homes showed that 8 out of 15 had heat pumps installed? Use = 10% significance level. (5 points each section)

A) What are the null and alternate hypotheses?

B) What is (are) the critical values for this test ?

C) What is the computed value of the test statistic?

D) What is the conclusion?