If a hypothesis test leads to incorrectly rejecting the null hypothesis, a Type II statistical error has been made.
Indicate whether the statement is true or false
Q. 2The number of no-shows for dinner reservations at the Cottonwood Grille is a discrete random variable with the following probability distribution:
No-shows Probability
0 0.30
1 0.20
2 0.20
3 0.15
4 0.15
Based on this information, the most likely number of no-shows on any given day is 0 customers.
Indicate whether the statement is true or false
Q. 3The Chamber of Commerce in a large Midwestern city has stated that 70 percent of all business owners in the city favor increasing the downtown parking fees. The city council has commissioned a random sample of n = 100 business owners.
Of these, 63 said that they favor increasing the parking fees. What is the probability of 63 or fewer favoring the idea if the Chamber's claim is correct?A) Approximately 0.0630
B) About 0.4370
C) Nearly 0.20
D) About 0.9370
Q. 4The experiment-wide error rate will be higher than the 0.05 significance level if the multiple comparison tests for the mean difference between any two populations use the 0.05 level.
Indicate whether the statement is true or false
Q. 5Of the two types of statistical errors, the one that decision makers have most control over is Type I error.
Indicate whether the statement is true or false
Q. 6Which of the following statements is true with respect to the sampling distribution of a proportion?
A) An increase in the sample size will result in a reduction in the size of the standard deviation.
B) As long as the sample size is sufficiently large, the sampling distribution will be approximately normal.
C) The mean of the sampling distribution will equal the population proportion.
D) All of the above are true.
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