Question

A simple random sample of 42 adults is obtained from a normally distributed population, and each person's red blood cell count (in cells per microliter) is measured. The sample mean is 5.25 and the sample standard deviation is 0 52 Use a 0.01 significance level and the given calculator display to test the claim that the sample is om a population with a mean less than 54, which s a value often used or the upper limit of the range of normal values. What do the results suggest about the sample group? T-Test < 5.4 -1.869444432 p 0.0343572919 x 5.25 Sx 0.52 n 42 What are the null and alternative hypotheses? A. H04-5.4 B. Ho : μ<5.4 H1 : μ-5.4 H1 : μ 15.4 H1 : μ > 5.4 Identify the test statistic. Round to three decimal places as needed.) ldentify the P-value. (Round to four decimal places as needed.) State the final conclusion that addresses the original claim. Choose the correct answer below. Roject Ha Tere is not sufficient e dence to support the claim that the sample is from a population with a me an less than 5.4 Fail to reject Ho. There is sufficient evidence to support the claim that the sample is from a population with a mean less than 5.4 A ○ B. C. Fail to reject Ho. There is not sufficient evidence to support the claim that the sample is from a population with a mean less than 5.4 O D. Reject Ho. There is sufficient evidence to support the claim that the sample is from a population with a mean less than 5.4. What do the results suggest about the sample group? O A. There is enough evidence to conclude that the sample is from a population with a mean less than 5.4, so it is unlikely that the population has counts that are too high O B. There is not enough evidence to conclude that the sample is from a population with a mean less than 5.4, so it is possible that the population has counts that are too high. 。C. There is not enough evidence to conclude that the sample is rom a population with a mean less than 54, so it is unlikely that the population has counts that are too high. 。D. There is enough evidence to conclude that the sample is from a population with a mean less than 54, so it is possible that the population has counts that are too high. Click to select your answers).

Answer 1

fordom Sa attearative eeee : Ha : eg b.0304 "' . P-value 0.0304 -Value 2 ente a tance 4, 아.statt fect null hf tottele,