5 6 7 8 ✓9 F 10 ✓ 11 Incorrect Your answer is incorrect. Suppose that...
D Incorrect Your answer is incorrect. Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of 100 minutes and a standard deviation of 15 minutes. What proportion of 1040R tax forms will be completed in at most 81 minutes? Round your answer to at least four decimal places. E 0.8980 5 ?
Homework 14 Question 6 of 11 (1 point) Question Attempt: 1 of Unlimited EN 5 6 7 8 - 10 11 Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of 100 minutes and a standard deviation of 15 minutes. What proportion of 10400 tax forms will be completed in at most 81 minutes? Round your answer to at least four decimal places. 0
Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of 100 minutes and a standard deviation of 10 minutes. What proportion of 1040R tax forms will be completed in more than 102 minutes? Round your answer to at least four decimal places X
Suppose that the time required to complete a 1040R tax form is normally dismbited with a mean of 110 minutes and a standard denation of 20 minutes. What proportion of 1040R tax forms will be completed in at most 129 minutes? Round your answer to at least four decimal places, Answer:
Answer question 1 & 2 asap please
Question 1 Let Z be a standard normal random variable. Calculate the following probabilities using the calculator provided. Round your responses to at least three decimal places. ? P(Z > -1.46) P(Z < 0.63) - 0 P(-0.84 <2<2.10) - 0 Question 2 Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of 100 minutes and a standard deviation of 20 minutes. What proportion of 1040R...
1 3 ✓ 5 ✓8 9 ✓ 10 ✓ 11 An aptitude test is designed to measure leadership abilities of the test subjects. Suppose that the scores on the test are normally distributed with a mean of 560 and a standard deviation of 125. The individuals who exceed 780 on this test are considered to be potential leaders. What proportion of the population are considered to be potential leaders? Round your answer to at least four decimal places. ?
3 5 Incorrect Your answer is incorrect . Your lower confidence limit is not correct • Your upper confidence limit is not correct. The scores on an examination in psychology are approximately normally distributed with mean 500 and an unknown standard deviation. The following is a random sample of scores from this examination. 410, 438, 469, 501, 527, 539,586 Find a 90% confidence interval for the population standard deviation. Then complete the table below. Carry your intermediate computations to at...
Suppose that pulse rates among healthy adults are normally distributed with a mean of 79 beats/minute and a standard deviation of 8 beats/minute. What proportion of healthy adults have pulse rates that are more than 81 beats/minute? Round your answer to at least four decimal places.
Suppose that the heights of adult men in the United States are normally distributed with a mean of 70.5 inches and a standard deviation of 3 inches. What proportion of the adult men in United States are at most 6 feet tall? (Hint: 6 feet = 72 inches.) Round your answer to at least four decimal places. 0 х 5 ?
suppose that the scores on a reading a Bility test are normally distributed with a mean of 60 and a standard deviation of nine. What proportion of individuals scored at least 75 points on this test? Round your answer to at least four decimal places