A government testing agency studies aspirin capsules to see if customers are get
ID: 3222787 • Letter: A
Question
A government testing agency studies aspirin capsules to see if customers are getting cheated with capsules that contain lesser amounts of medication than advertised (H_0: Capsules contain the advertised level). Suppose the testing agent concludes the capsules contain a mean amount below the advertised level when in fact the advertised level is the true mean. This depicts a _____. A) Type I error B) Type II error C) correct decision A quality control officer tests bottles of shampoo to see if the filling machines are putting the proper amount in each bottle properly (H_0: The machines are functioning properly). They do not want to shut down production unless there is strong evidence indicating that the machines are not functioning. After testing a sample of bottles, the officer decides to leave the filling machines operating. Actually, however, the filling machines are not operating properly. This depicts a _____. A) Type I error B) Type II error C) correct decision The owner of a local nightclub has recently surveyed a random sample of 250 customers of the club. She wishes to determine whether or not the mean age of her customers is over 30. If so, she plans to alter the entertainment to appeal to an older crowd. If not, no entertainment changes will be made. The appropriate hypotheses are H_0: mu = 30 versus H_a: mu > 30. If she concludes the mean age is over 30 when in fact it is over 30, she makes a _____. A) Type I error B) Type II error C) correct decision The fire alarm went off in PEARCE Hall on a certain day. A thorough examination revealed that it was a false alarm, since there was no fire. In the content of hypothesis testing with H_0: the building is not on fire versus H_: the building is on fire. This depicts a _____. A) Type I error B) Type II error C) correct decision A bottling company needs to produce bottles that will hold 12 ounces of liquid for a local brewery. Periodically, the company gets complaints that their bottles are not holding enough. That is, their bottles hold less than 12 ounces. To test this claim, the bottling company randomly samples 36 bottles and finds the average amount of liquid held by the 36 bottles is 11.80 ounces with a standard deviation of 0.45 ounces. Let mu be the true mean amount of liquid held by the bottles. Which of the following is the set of hypotheses the company wishes to test? A) H_0: mu =12 versus H_a: mu notequalto 12 B) H_0: mu =12 versus H_a: mu > 12 C) H_0: mu = 12 versus H_a: muExplanation / Answer
1A)type I error
2)type II error
3)correct decision
4)correct decision
5)option C
6)option B