Choose the correct answers 1. The t-student probability distribution: a) It is a probability distribution where the possible values are finite. b) It is chosen to calculate the test statistic when the population variance is known. c) Chosen to calculate the test statistic when the population standard deviation is unknown d) It is a probability distribution whose area under the curve differs from 1 (one). 2. A sampling probability distribution is: a) A collection of possible values of a statistic b) None of the other answers c) A probability distribution of sample variances d) A probability distribution of sample means 3. The null hypothesis is sometimes expressed in terms of equality a) True b) False 4. The normal probability distribution is used to calculate the test statistic when: a) We want to test the hypothesis about the variance of a population b) You have less than thirty data or the population standard deviation is unknown c) The variance of the population is known d) Only when the data distribution is normal
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Step 2: A sampling probability distribution is a probability distribution of sample means. Step 3: The null hypothesis is sometimes expressed in terms of equality. Step 4: The normal probability distribution is used to calculate the test statistic when Show more…
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