The average score for a class of 35 students was 70 . The 20 male students in the class averaged 73 . The 15 female students in the class averaged:
a. 73
b. 70
c. 66
d. 60
e. 35
Q. 2Rejecting the null hypothesis when it is false is referred to as Type B correct decision.
Indicate whether the statement is true or false
Q. 3Since the population is always larger than the sample, the population mean:
a. is always larger than the sample mean
b. is always smaller than the sample mean
c. is always larger than or equal to the sample mean
d. can be smaller than, or larger than, or equal to the sample mean
e. is always smaller than or equal to the sample mean
Q. 4Failing to reject the null hypothesis when it is true is referred to as Type A correct decision.
Indicate whether the statement is true or false
Q. 5Which of the following statements is true for the following data values: 17, 15, 16, 14, 17, 18, and 22?
a. The mean, median and mode are all equal.
b. Only the mean and median are equal.
c. Only the mean and mode are equal.
d. Only the median and mode are equal.
e. The mean, median and mode are all different.
Q. 6The null hypothesis is sometimes referred to as the research hypothesis since it represents what the researcher hopes will be found to be true.
Indicate whether the statement is true or false
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