Solve the problem. Assume that z scores are normally distributed with a mean of 0 and...
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?...
Solve the problem. Assume that Z e normally distributed with parameters, (u = 0, 0 = 1). If P(-k<Z<k) - 0.06376, find k. 0.18 0.08 1.64 1.49 Moving to another question will save this response.
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...
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 :-)
X is a normally distributed variable with mean p = 30 and standard deviation o = 4. Find P(x < 40)
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.)
Solve the problem. Scores on a test are normally distributed with a mean of 78 and a standard deviation of 14. What is the standard score ( 2 score) for an exam score of 66 ? -0.86 -0.67 0.67
Assume that all SAT scores are normally distributed with a mean µ = 1518 and a standard deviation σ = 325. If 100 SAT scores (n = 100) are randomly selected, find the probability that the scores will have an average less than 1500. TIP: Make the appropriate z-score conversion 1st, and then use Table A-2 (Table V) to find the answer. Assume that all SAT scores are normally distributed with a mean µ = 1518 and a standard deviation...