If the confidence coefficient is 0.9, ________.
A) we expect that 9 samples out of 100 will support the null hypothesis
B) we expect that 90 out of 100 samples will support the null hypothesis
C) we expect that 10 samples out of 100 will support the null hypothesis
D) we expect that all 100 samples will support the null hypothesis
Question 2
Rosanne is the floor manager at Yesbe Beauty Products, who takes care of the face cream section. One of her tasks is to make sure that the face cream mini packs weigh four ounces (4.0 ) on average.
Assume that the standard deviation of the weight of the mini packs is known to be 0.1 ounces. Rosanne tasks one of her employees to choose 25 packs at random and find the average weight. For what values would Rosanne tell the employee to reject the production, if she wanted the probability of a Type I error to be 0.10 or less?A) Reject the production if the average weight < 3.955.
B) Reject the production if the average weight < 3.975.
C) Reject the production if the average weight < 3.965.
D) Reject the production if the average weight < 3.985.
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