Suppose a simple random sample of size n = 49 is obtained from a population that is skewed right with u= 70 and o= 21. (a) Describe the sampling distribution of x. (b) What is P (x>74.05)? (c) What is P (xs63.25) ? (d) What is P (66.55

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Suppose a simple random sample of size n = 49 is obtained from a population that is skewed right with u= 70 and o = 21.
(a) Describe the sampling distribution of x.
(b) What is P (x>74.05)?
(c) What is P (xs63.25) ?
(d) What is P (66.55 <x< 74.8)?
(a) Choose the correct description of the shape of the sampling distribution of x.
A. The distribution is approximately normal.
O B. The distribution is uniform.
O C. The distribution is skewed left.
OD. The distribution is skewed right.
O E. The shape of the distribution is unknown.
Find the mean and standard deviation of the sampling distribution of x.
E = 70
% = 3
(Type integers or decimals. Do not round.)
(b) P (x>74.05) = (Round to four decimal places as needed.)
Transcribed Image Text:Suppose a simple random sample of size n = 49 is obtained from a population that is skewed right with u= 70 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x>74.05)? (c) What is P (xs63.25) ? (d) What is P (66.55 <x< 74.8)? (a) Choose the correct description of the shape of the sampling distribution of x. A. The distribution is approximately normal. O B. The distribution is uniform. O C. The distribution is skewed left. OD. The distribution is skewed right. O E. The shape of the distribution is unknown. Find the mean and standard deviation of the sampling distribution of x. E = 70 % = 3 (Type integers or decimals. Do not round.) (b) P (x>74.05) = (Round to four decimal places as needed.)
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