Solution :
Using standard normal table,
P(-a Z a) = 0.4314
P(Z a) - P(Z -a) = 0.4314
2P(Z a) - 1 = 0.4314
2P(Z a) = 1 + 0.4314 = 1.4314
P(Z a) = 1.4314 / 2 = 0.7157
P(Z 0.57) = 0.7157
z = 0.57
Assume that z scores are normally distributed with a mean of O and a standard deviation...
Solve the problem. Assume that z scores are normally distributed with a mean of 0 and a standard deviation of 1. If Pa <za)-0.4314,find a. 0.57 -0.18 1.49 0.3328
Assume that z-scores are normally distributed with a mean of O and a standard deviation of 1. If P(0 < z < a) = 0.4857, find a. a = (Round to two decimal places.)
15) Assume that z scores are normally distributed with a mean of 0 and a standard deviation 15) of 1. If P(z> c) 0.109, find c. olve the problem. 16) 16) Scores on an English test are normally distributed with a mean of 37.4 and a standard deviation of 7.9. Find the score that separates the top 59% from the bottom 41% 17) Suppose that replacement times for washing machines are normally distributed with a 17) mean of 10.9 years...
stats Assume that z-scores are normally distributed with a mean of O and a standard deviation of 1. If P(z > d) = 0.9861, find d. d (Round to two decimal places.)
Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P ( − 0.7 < z < b ) = 0.749 , find b. b= (round to three decimal places)
Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P ( 0 < z < a ) = 0.4545 , find a. a = **Please show what you're putting in the calculator for example if you have to use the function normalcdf or invNorm if possible... if not please write it out fully thank you :-)
Use the normal distribution to approximate the desired probability. A coin is tossed 24 times.A) A person, who claims to have extrasensory perception, is asked to predict the outcome of each flip in advance. She predicts correctly on 16 tosses. What is the probability of being correct 16 or more times by guessing? SELECT ALL APPLICABLE CHOICES B) 7.852094% 7.902094% C) D) 7.652094% 7.402094% E) F) 7.318761% 7.952094%
Use the normal distribution to approximate the desired probability 4 coin is tossed 20times. A person who claimsto have extrasensory perception, is asked to predict the outcome of each flip in advance. She predicts correctly on 6 tosses. What is the probablity of being 0069, yes 4931,yes 4931, no 0069,n correct 16 or more times by guessing? Does this probability seem to verify her claim?
Scores on a homework are normally distributed with a mean of 78 and a standard deviation of 14. What is the standard score ( z score) for an homework score of 66 ?
Question 13 4 pts Z-scores A variable is normally distributed, with mean 118 and standard deviation 30. What is the Z-score when x = 100? (Select] What x value is 1.5 standard deviations above the mean? [Select) > Question 14 6 pts Normal Distribution A variable is normally distributed, with mean 118 and standard deviation 30. What is P(60 SXS 160)? (Select) What is P(x2130)? Select) What is the top 10%? [Select