10.2

 

  1. State the value of the test statistic or the p-value and the decision here. .65; fail to reject the null hypothesis. does not fall within the rejection region.

  2. State the value of the test statistic or the p-value and the decision here. .69; fail to reject the null hypothesis. does not fall within the rejection region.

 

10.3

1.)

a) type answer here.
  2.602
b) type answer here.
  -1.729
c) type answer here.
  +-2.179

12.)

a) Ho: u = 63.7
   
   H1: u > 63.7
  
b) type answer here.
  this value represents the probability of observing a test statistic as large or larger under assumption Ho is true
c) type answer here.
  fail to reject the hypothesis because .35 does not fall within the rjection region.

13.)

a) Ho: u = 22

   H1: u > 22
  
b) type answer here.
  200 is greater than 30 so the sample is large and random. It is reasonable to assume that the sample is small relative to the population, so the scores are independent.
c) State the value of the test statistic or the p-value and the decision here.
  2.176, reject the null hypothesis
d) type answer here.
  There is sufficent evidence that the students who complete the core cirriculum are scoring above 22 on the math portion of the ACT.

14.)

a) Ho: u = 501

   H1: u < 501

b) type answer here.
 the sample is random, n=100>30,we can assume that the sample is small relative to the population, so the scores are independent

c) State the value of the test statistic or the p-value and the decision here.
-1.379<-1.29; reject the null hypothesis
d) type answer here.
  here is sufficient evidence to conclude that students who learn English as well as another language simultaneously score worse on the SAT Critical Reading exam than the general population of test takers.
  1. State the value of the test statistic or the p-value and the decision here.

-4.553, reject the null hypothesis