The Colbert Real Estate Agency has determined the number of home showings given by its agents is the same each day of the week. Then the variable, number of showings, is a continuous distribution.
Indicate whether the statement is true or false
Q. 2Which of the following statements is not consistent with the Central Limit Theorem?
A) The Central Limit Theorem applies without regard to the size of the sample.
B) The Central Limit Theorem applies to non-normal distributions.
C) The Central Limit Theorem indicates that the sampling distribution will be approximately normal when the sample size is sufficiently large.
D) The Central Limit Theorem indicates that the mean of the sampling distribution will be equal to the population mean.
Q. 3A chain of fast food restaurants wants to compare the average service times at four different restaurants. They want to conduct a hypothesis test to determine if all four means are the same or not.
If n = 10 observations are taken at each of the four restaurants, then the degrees of freedom are D1 = 39 and D2 = 3. Indicate whether the statement is true or false
Q. 4In a hypothesis test, the p-value measures the probability that the alternative hypothesis is true.
Indicate whether the statement is true or false
Q. 5The Carter Department Store has data on the sales volume by department for the past 200 days. The data are in an Excel spreadsheet where column A represents the department name and column B represents the sales for each day in that department.
In order to construct a bar chart that illustrates the difference in total sales by department for the 200 days, a required step in Excel will be to:A) determine the total sales by department.
B) use the frequency function to count the number of occurrences by department.
C) group the data into 5 to 20 classes.
D) determine the class widths.
Q. 6A golf course in California has determined that the mean time it takes for a foursome to complete an 18 hole round of golf is 4 hours 35 minutes (275 minutes) with a standard deviation of 14 minutes.
The time distribution is also thought to be approximately normal. Every month, the head pro at the course randomly selects a sample of 8 foursomes and monitors the time it takes them to play. Suppose the mean time that was observed for the sample last month was 4 hours 44 minutes (284 minutes). What is the probability of seeing a sample mean this high or higher?A) Approximately 0.4649
B) About 0.9649
C) Approximately 0.0351
D) About 0.9298
Quick Reply
