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To test H0: μ=50 versus H1: μ<50, a simple random sample of size n=26 is obtained...
To test H0: μ=50 versus H1: μ<50, a simple random sample of size n=26 is obtained from a population that is known to be normally distributed. Answer parts (a)-(c). (a) If x overbar =47.3 and s=13.1, compute the test statistic. t= _________ (Round to two decimal places as needed.) (b) Draw a t-distribution with the area that represents the P-value shaded. Determine whether to use a two-tailed, a left-tailed, or a right-tailed test. c) Approximate the P-value.
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