MediumHypothesis testing

OpenStax, Introductory Business Statistics 2e §9.3 Probability Distribution Needed for Hypothesis Testing · Exercise 12 · Statistics · Hypothesis testing

Probability Distribution Needed for Hypothesis Testing · Exercise 12

It is believed that Lake Tahoe Community College (LTCC) Intermediate Algebra students get less than seven hours of sleep per night, on average. A survey of 22 LTCC Intermediate Algebra students generated a mean of 7.24 hours with a standard deviation of 1.93 hours. At a level of significance of 5%, do LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average? The distribution to be used for this test is $X -$ ~ ________________

(a) $N (7.24, \frac{1.93}{22})$
(b) $N (7.24, 1.93)$
(c) t_22
(d) t_21

~8 minWritten answer · check your work with Lemma

OpenStax, Introductory Business Statistics 2e · §9.3 Probability Distribution Needed for Hypothesis Testing · Exercise 12

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