MATH-1P98-Webwork-3-Attempt-4

MATH-1P98-Webwork-3-Attempt-4 - Aanjaneya Sood Assignment...

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Aanjaneya Sood MATH1P98D02FW2016 Assignment WeBWorK Assignment 3 due 10/30/2016 at 02:31am EDT Problem 1. 6. (1 pt) Find the value of the standard normal random variable z , called z 0 such that: (a) P ( z z 0 ) = 0 . 5865 z 0 = (b) P ( - z 0 z z 0 ) = 0 . 8954 z 0 = (c) P ( - z 0 z z 0 ) = 0 . 2748 z 0 = (d) P ( z z 0 ) = 0 . 143 z 0 = (e) P ( - z 0 z 0 ) = 0 . 372 z 0 = (f) P ( - 2 . 07 z z 0 ) = 0 . 5544 z 0 = Answer(s) submitted: (incorrect) Correct Answers: 0.218550777026199 1.62295043870524 0.351517694667278 1.06693763219277 1.13589622116733 0.185547024908919 Problem 2. 10. (1 pt) A study on the length of time a person brushes their teeth is conducted on a large population of adults. The mean brushing time is μ and the standard deviation is σ . A simple random sam- ple of 240 adults is considered. (NOTE: For the following problems enter: GREATER THAN ”, ” EQUAL TO ”, ” LESS THAN ”, or ” NOT ENOUGH INFORMATION ”, without the quotes.) (a) The mean of the sampling distribution is the mean of the population. (b) The standard deviation of the sampling distribution is the standard deviation of the population. Answer(s) submitted: (incorrect) Correct Answers: EQUAL TO LESS THAN Problem 3. 7. (1 pt)
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