95. Using the situation in #91, a. Find the sample mean blood lead level greater than 95% of all sample mean blood lead

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95. Using the situation in #91, a. Find the sample mean blood lead level greater than 95% of all sample mean blood lead levels. I b. Find the value of 8 smaller than 95% of all sample mean blood lead levels. c. What are the two symmetric values of that contain the middle 90% of sample means?

91. A study of workers in lead-exposed jobs found that the mean blood lead level was u = 31.4 micrograms, with a standard deviation of g = 14.2 micrograms. Let the sample size be n = 16. Assume the distribution is normal. a. Find the mean of the sampling distribution Hx and the standard error 0x b. Calculate the probability that the sample mean blood lead level will be less than 27.85 micrograms. c. Compute P(x > 38.5) I 95. Using the situation in #91, a. Find the sample mean blood lead level greater than 95% of all sample mean blood lead levels. b. Find the value of smaller than 95% of all sample mean blood lead levels. c. What are the two symmetric values of that contain the middle 90% of sample means?