In a two-tailed hypothesis test for a population mean, an increase in the sample size will:
A) have no effect on whether the null hypothesis is true or false.
B) have no effect on the significance level for the test.
C) result in a sampling distribution that has less variability.
D) All of the above are true.
Question 2
Recently, a department store chain was interested in determining if there was a difference in the mean number of customers who enter the three stores in Seattle.
The analysts set up a study in which the number of people entering the stores was counted depending on whether the day of the week was Saturday, Sunday, or a weekday. The following data were collected: Store A Store B Store CSaturday 176 300 56Sunday 145 290 40Weekday 108 150 40Given this format, which of the following is true?A) The day of the week would be considered the blocking factor in the study.
B) There are six treatments.
C) This is a balanced design since the number of rows and columns is equal.
D) All of the above are true.
Continuous variation in a natural population
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