All analysis of variance procedures require that the populations being compared have equal variances.
Indicate whether the statement is true or false
Q. 2Suppose the annual out-of-pocket health care expenses for retirees have a mean of 10,700 and a standard deviation of 2,500. The percentage of retirees with annual out-of-pocket health care costs between 5,700 and 15,700 is
A) approximately 68.
B) at least 89.
C) approximately 95.
D) at least 75.
Q. 3Dwight Howard plays center in the National Basketball Association and averaged 1.8 blocked shots per game during a recent season. Assume that the number of blocked shots per game follows the Poisson distribution.
What is the probability that Dwight Howard will block exactly one shot during the next game?A) 0.2975
B) 0.3960
C) 0.4347
D) 0.5236
Q. 4If the purpose of the hypothesis test is to establish that a population parameter is equal to or not equal to a specific value, the _____________________________
_________.
A) equality statement is always assigned to the null hypothesis
B) equality statement is always assigned to the alternative hypothesis
C) statement is always assigned to the null hypothesis
D) or statement is always assigned to the alternative hypothesis
Q. 5According to a survey of business executives, 78 received a pay raise when they asked for one. A random sample of four executives was selected. The probability that all four received a raised when they asked for one is ________.
A) 0.056
B) 0.127
C) 0.237
D) 0.370
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