The file Danish Coffee contains a random sample of 144 Danish coffee drinkers and measures the annual coffee consumption in kilograms for each sampled coffee drinker.
A marketing research firm wants to use this information to develop an advertising campaign to increase Danish coffee consumption.Based on the sample's results, what is the best point estimate of average annual coffee consumption for Danish coffee drinkers?A) 6.5368
B) 7.4151
C) 6.1411
D) 7.4127
Q. 2The Jack In The Box franchise in Bangor, Maine, has determined that the chance a customer will order a soft drink is 0.90.
The probability that a customer will order a hamburger is 0.60. The probability that a customer will order french fries is 0.50.
If a customer places an order, what is the probability that the order will include a soft drink and no fries if these two events are independent?
A) 0.45
B) 0.50
C) 0.65
D) 0.70
Q. 3The J.B. Hanson Company is interested in analyzing the relationship between end-of-the-week inventory levels and sales for the same week. The graph that most likely would be used to show this relationship is a histogram.
Indicate whether the statement is true or false
Q. 4Identify and explain at least three of the general rules for examining control charts to see if a process is in statistical process control.
What will be an ideal response?
Q. 5If you are sampling from a very large population, a doubling of the sample size will reduce the standard error of the sampling distribution by one-fourth.
Indicate whether the statement is true or false
Q. 6Suppose a study of 196 randomly sampled privately insured adults with incomes over 200 of the current poverty level is to be used to measure out-of-pocket medical expenses for prescription drugs for this income class.
The sample data are in the file Drug Expenses.Based on the sample data, construct a 95 confidence interval estimate for the mean annual out-of-pocket expenditures on prescription drugs for this income class. Interpret this interval.A) (162.08, 172.96)
B) (163.50, 171.54)
C) (164.19, 170.85)
D) (161.97, 173.07)
Q. 7To show the relationship between amount of rainfall and the number of car accidents, the best type of graph to use is a scatter diagram.
Indicate whether the statement is true or false
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