Mathematics
Mathematics, 18.01.2020 06:31, mia7955

Consider the hypothesis test given by

h0: μ=650ha: μ< 650

assume the population is normally distributed. in a random sample of 25 subjects, the sample mean is found to be ´x=640, and the sample standard deviation is s=30.

(a) (1 pt) is this test for population proportion, mean or standard deviation? what distributionshould you apply for the critical value? the t distribution should be utilized since the population standard deviation is unknown.

(b) (1 pt) is the test a right-tailed, left-tailed or two-tailed test? the test would be left-tailed.

(c) (2 pts) find the test statistic. (show work and round the answer to two decimal places)t = (640-650)/ (30/5) = -10/6 = -5/3 = -1.6667

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Consider the hypothesis test given by

h0: μ=650ha: μ< 650

assume the popu...

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