Multiple Choice
Independent samples are obtained from two normal populations with unknown but equal standard deviations (variances) in order to construct a hypothesis test for the difference between the population means.If the first sample contains 20 items and the second sample contains 25 items, the correct form to use for the sampling distribution is the
A) normal distribution
B) t distribution with 43 degrees of freedom
C) t distribution with 45 degrees of freedom
D) F distribution with 20 and 25 degrees of freedom
E) none of the above
Correct Answer:
Verified
Correct Answer:
Verified
Q21: The level of significance in a hypothesis
Q22: Which of the following statements about
Q23: You are using independent samples of
Q24: The sampling distribution of the difference
Q25: You are using a sample of
Q27: In hypothesis test for the difference between
Q28: In a two-tailed hypothesis test in
Q29: If we are interested in testing
Q30: You are using a sample of
Q31: A matched sample design often leads to