Question 1

A defense company working for the government claims that at most 7% of its missiles are defective. A sample of 170 missiles is taken and 17 are defective. Test their claim at 5% level.

State clearly the null and the alternative hypothesis

H0: p >=0.1; H1: p<0.1

H0:mu>=0.07; H1: mu<0.07

H0: p <=0.07; H1: p>0.07

H0: p <=0.1; H1: p>0.1

H0: p=0.07: H1: p not equal 0.07

Question 7

A simple random sample of 81 SAT scores in a certain district has a mean of 1200 and a standard deviation of 400. District officials claim that their students' scores on average are at least 1300. A government agency tries to ascertain their claim at a 1% level.

State clearly the null and the alternative hypothesis:

H0: mu<= 1200; H1: mu> 1200

H0: mu>= 1200; H1: mu< 1200

H0: mu<= 1300; H1: mu> 1300

H0: mu = 1300; H1: mu not equal 1300

H0: mu>= 1300; H1: mu< 1300

29-statistics-question