Given a normal population which has a mean of 70 and a standard deviation of 14, find the probability that a random sample of 49 has a mean between 68 and 71. Report your answer to four decimal places.
Given a normal population which has a mean of 70 and a standard deviation of 14,...
A normal population has a mean of 62 and a standard deviation of 14. You select a random sample of 9. Compute the probability the sample mean is: (Round z values to 2 decimal places and final answers to 4 decimal places.) (a) Greater than 64. Probability (b) Less than 58. Probability (c) Between 58 and 64. Probability
A population has a mean μ-85 and a standard deviation σ-21. Find the mean and standard deviation of a sampling distribution of sample means with sample size n 49 H(Simplity your answer) o-# L] (Simplify your answer.) to the random variable x is normally distributed with mean-83 and standard deviation ơ-4 Find the indicated probability P(70sx 76) P(70 < x < 76)= Round to four decimal places as needed.) Enter your answer in the answer box
1. Given a normal population which has a mean of 140 and a standard deviation of 21, find the probability that a random sample of 100 has a mean between 138 and 145. 2. If all possible samples of size n are drawn from an infinite population with standard deviation 8, then the standard error of the sample mean equals 1.0 if the sample size is 64. a. true b. false 3. You have completed an hypothesis test and determine...
A normal population has a mean of 57 and a standard deviation of 14. You select a random sample of 16. Round to 4 decimal places. a. 33% of the time, the sample average will be less than what specific value? Value b. 33% of the time, the value of a randomly selected observation will be less than h. Find h. h c. The probability that the sample average is more than k is 22%. Find k.
5.4.1 Question Help A population has a mean = 141 and a standard deviation o = 28. Find the mean and standard deviation of the sampling distribution of sample means with sample size n = 40. The mean is :-), and the standard deviation is 0;=0 (Round to three decimal places as needed.) 5.4.2 Question Help A population has a meanu - 74 and a standard deviation = 8. Find the mean and standard deviation of a sampling distribution of...
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) H = 48; 0 = 16 P(40 sxs 47) = Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) u = 14.6; 0 = 3.3 P(8 SX s 12) = Assume that x has a normal distribution with the...
1. X has a normal distribution with the given mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 41, σ = 20, find P(35 ≤ X ≤ 42) 2. Find the probability that a normal variable takes on values within 0.9 standard deviations of its mean. (Round your decimal to four decimal places.) 3. Suppose X is a normal random variable with mean μ = 100 and standard deviation σ = 10....
A normal population has a mean of 68 and a standard deviation of 6. You select a sample of 52. Compute the probability that the sample mean is (round z score 2 decimals and final answer 4): 1) Less than 67 2) Between 67 and 69. 3) 69 and 70 4) greater and 70
X has a normal distribution with the given mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 49, σ = 10, find P(34 ≤ X ≤ 69)
Given a normal population whose mean is 445 and whose standard deviation is 26, find each of the following: A. The probability that a random sample of 3 has a mean between 449 and 452. Probability = 0.025 B. The probability that a random sample of 17 has a mean between 449 and 452. Probability = C. The probability that a random sample of 27 has a mean between 449 and 452. Probability =