[STATISTICS]
Consider a normal population with a mean of 86 and a standard deviation of 10. If a random sample of size 58 is selected, what is the probability that the sample mean will fall between 84.5 and 88.2?
[STATISTICS] Consider a normal population with a mean of 86 and a standard deviation of 10....
A normally distributed population has a mean of 500 and a standard deviation of 80. a. Determine the probability that a random sample of size 25 selected from this population will have a sample mean less than 463 . b. Determine the probability that a random sample of size 16 selected from the population will have a sample mean greater than or equal to 538. A company makes windows for use in homes and commercial buildings. The standards for glass...
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
Consider a normal population with mean y = 20 and standard deviation o = 6. Assume that a random sample of size n= 15 from a population. The sample mean and sample standard deviation are X and S, respectively. Determine a such that X-20 P <a = 0.05. o/15 A. -1.753 B. -1.761 C. 1.753 D. 1.761 E.-1.645
Consider a normal population with mean u = 20 and standard deviation o = 6. Assume that a random sample of size n = 15 from a population. The sample mean and sample standard deviation are X and S, respectively. Determine a such that X – 20 Р Com sa) 0.05. 0/V15 A. -1.753 B. -1.761 C. 1.753 D. 1.761 E. -1.645
10. The population average for SAT score is 1020, with a population standard deviation of 100 a. What is the standard deviation of the distribution of , if many samples of size 64 is selected b. What is the probability that a random sample of 64 students will provide a sample mean SAT score within 10 points of the population mean?
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...
population values has normal distribution with mean of 212.5 and standard deviation of 4.8. we get random sample of 40. a) find probability that a single value is greater than 200.3 b) find probability that a sample size n=40 randomly selected is greater than 200.3 sorry SD 4.8
C) the standard deviation of the population is known D) both the underlying population is normal and the sample size n 30 are correct II. Calculation Questions. (2 points) 5. A random sample of size n=50 is taken from a population with mean μ =-9.5 and standard deviation 2. Calculate the expected value and standard error for the sampling distribution of the sample mean. What is the probability that the sample mean is less than -10? a. b. c. What...
Check my ork A normal population has a mean of 58 and a standard deviation of 13. You select a random sample of 25. Compute the probability that the sample mean Is: (Round your z values to 2 declmal places and final answers to 4 deeclmal places): 12 polnts a. Greater than 60. eBook Ask Print References b. Less than 57 Probability Ask Print References c. Between 57 and 60. Probability Mc
A normally distributed population has a mean of 600 and a standard deviation of 60. a. Determine the probability that a random sample of size 25 selected from this population will have a sample mean less than 579. b. Determine the probability that a random sample of size 16 selected from the population will have a sample mean greater than or equal to 636.