If the absolute difference between two sample means is large enough to be greater than the Tukey-Kramer critical range, we have enough evidence to conclude that the population means are different.
Indicate whether the statement is true or false
Q. 2When conducting a hypothesis test for the population mean when sigma is known and the sample size is 30 or more, the test statistic follows the _____________________________
__.
A) Student's t-distribution
B) binomial distribution
C) normal distribution
D) exponential distribution
Q. 3Suppose the average tread-life of a certain brand of tire is 42,000 miles and that this mileage follows the exponential probability distribution.
What is the probability that a randomly selected tire will have a tread-life between 30,000 and 50,000 miles?A) 0.1854
B) 0.2719
C) 0.5105
D) 0.6959
Q. 4If the size for each sample is the same for the one-way ANOVA, the Tukey-Kramer critical range for all pairs would be the same.
Indicate whether the statement is true or false
Q. 5Suppose the average tread-life of a certain brand of tire is 42,000 miles and that this mileage follows the exponential probability distribution. What is the probability that a randomly selected tire will have a tread-life of less than 65,000 miles?
A) 0.3084
B) 0.4497
C) 0.5630
D) 0.7872
Q. 6The critical value for the Tukey-Kramer critical range is found using the F-distribution.
Indicate whether the statement is true or false
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