If the probability of a Type I error is set at 0.05, then the probability of a Type II error will be 0.95.
Indicate whether the statement is true or false
Q. 2The significance level in a hypothesis test corresponds to the maximum probability that a Type I error will be committed.
Indicate whether the statement is true or false
Q. 3One of the leading dot-com companies has found that the proportion of customers who come into its Web site that actually makes a purchase is 0.045.
The company plans to see whether this rate still holds by selecting a random sample of 200 hits on its Web site. Given that the 0.045 rate still applies, what is the standard deviation of the sampling distribution?A) Approximately 0.0147
B) About 0.0002
C) About 0.0354
D) Can't be determined without knowing the mean.
Q. 4The sales manager at Western Furniture Company tracked data on the number of customers who came into the store each day and the total dollar volume of sales at the store during the same day.
She is considering putting together a report for top management and wishes to show the relationship between these two variables. Which of the following graphs would likely be most useful? She has a sample of 36 days worth of data.A) Scatter diagram
B) Bar chart
C) Frequency histogram
D) Pie chart
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