Suppose that, in a hypothesis test, the null hypothesis in fact true. A. Is it p

Question

Suppose that, in a hypothesis test, the null hypothesis in fact true. A. Is it possible to make a Type I error? Choose correct one. (a) No, it is not possible. A Type I error is not rejecting the null hypothesis when it is in fact false. (b) Yes, it is possible. A Type I error is rejecting the null hypothesis when it is in fact true. (c) No, it is not possible. A Type I error is rejecting the null hypothesis when it is in fact true. (d) Yes, it Is possible. A Type I error is not rejecting the null hypothesis when it is in fact false. B. Is it possible to make a Type ll error? (a) No, it is not possible. A Type ll error is not rejecting the null hypothesis when it is in fact false. (b) No, it is not possible. A Type II error is rejecting the null hypothesis when it is in fact false. (c) Yes, it is possible. A Type ll error is not rejecting the null hypothesis when it is in fact false. (d) Yes, it is possible. A Type II error is rejecting the null hypothesis when it is in fact true. Cadmium, a heavy metal, is toxic to animals. Mushrooms, however, are able to absorb and accumulate cadmium at high concentrations. Some governments have a safety limit for cadmium in dry vegetables at 3.1 parts per million (ppm). A hypothesis test is to be performed to decide whether the mean cadmium level in a certain mushroom is not equal to the government's recommended limit. A. Determine the null hypothesis and the alternative hypothesis. H_0:mu H_:mu B. Classify the hypothesis test as two tailed, left tailed, or right tailed. A study by researchers at a university addressed the question of whether the mean body temperature of an animal is 97.6 degree F. Among other data, the researchers obtained the body temperatures of 92 healthy animals. Suppose you want to use those data to decide whether the mean body temperature of healthy animals is greater than 97.6 degree F. A. Determine the null hypothesis and the alternative hypothesis. H_0:mu H_:mu B. Classify the hypothesis test as two tailed, left tailed, or right tailed.

Explanation / Answer

suppose that in a hypothesis test the null hypothesis in fact true
A) is it possible to make a type1 error?
Ans:Yes,it is possible .A type 1 error is rejecting th enull hypothesis when it is in fact true
B) Is it possible to make typeII error?
Ans:YEs,it is possible .A type II error is not rejecting the null hypothesis when it is in fact false

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