d = -2.20
stats Assume that z-scores are normally distributed with a mean of O and a standard deviation...
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.)
Assume that z scores are normally distributed with a mean of O and a standard deviation of 1. If Pl-a<z<a) = 0.4314, find a. 1.49 0.57 -0.18 0.3328 Question 5 O out of 2 points A coin is tossed 20 times. 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 X of being correct 16 or more times by guessing?...
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...
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 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 :-)
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to two decimal places. O A. 66.60 O B. 0.29 ОС. 088 O D. 73.47 Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to...
Assume the random variable X is normally distributed, with mean = 50 and standard deviation 0 - 9. Find the 12th percentile. The 12th percentile is 0 (Round to two decimal places as needed.) Find the Z-scores that separate the middle 67% of the distribution from the area in the tails of the standard normal distribution Click the loon to view a table of areas under the normal curve. The Z-scores are a (Use a comma to separate answers as...
Scores on a quiz are normally distributed with a mean of 9.6 and a standard deviation of 3. Compute the z score for a quiz score of 10. Round your final answer to three decimal places.
CI Assume the random variable x is normally distributed with mean probability 89 and standard deviation ơ 4 Find the indicated Px 83) P(x < 83) (Round to four decimal places as needed.) Enter your answer in the answer box imal p O Type here to search 图自3 e )
Assume the random variable x is normally distributed with mean u = 80 and standard deviation c=5. Find the indicated probability. P(65<x< 73) P(65<x< 73)=0 (Round to four decimal places as needed.) X 5.2.17 Use the normal distribution of SAT critical reading scores for which the mean is 507 and the standard deviation is 122. Assume the vari (a) What percent of the SAT verbal scores are less than 550? (b) If 1000 SAT verbal scores are randomly selected, about...