A person's blood pressure is monitored by taking 5 readings daily. The probability distribution of his reading had a mean of 130 and a standard deviation of 5. a. Each observation behaves as a random sample. Find the mean and the standard deviation of the sampling distribution of the sample mean for the five observations each day. b. Suppose that the probability distribution of his blood pressure reading is normal. What is the shape of the sampling distribution? c. Refer to (b). Find the probability that the sample mean exceeds 140. a. The mean of the sampling distribution is 130. The standard deviation is 2.2360 (Round to three decimal places as needed.) ~.. b. Choose the correct description of the shape of the sampling distribution of x for a sample size of 5. A. The distribution is approximately normal. OB. The distribution is skewed right. OC. The distribution is uniform. OD. The distribution is skewed left. OE. The shape of the distribution is unknown. c. The probability that the sample mean exceeds 140 is (Round to four decimal places as needed.)

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