A random sample of 35 students who have taken STT101A under Dr.LeBron James were asked about their STT101A (raw) grade. The samplemean was found to be 90. Which of the following statements is true?O The best point estimate for the mean STT101A grade under Dr. James is 90The true mean grade for all STT101A students is 90.O The true mean grade for all STT101A students under Dr. James is 90.O The best point estimate for the mean STT101A grade for all students is 90.

Answered: Image /qna-images/answer/2c65f314-8d6a-4d5c-9e5a-9f9faeb5bae3.jpg

Answered: A random sample of 35 students who have…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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on an intelligence quotient test with a mean score of 100 and a standard variation of 15, patrick scored 85. what is patrick's Z-score?
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Fran is training for her first marathon, and she wants to know if there is a significant difference between the mean number of miles run each week by group runners and individual runners who are training for marathons. She interviews 40 randomly selected people who train in groups, and finds that they run a mean of 46.6 miles per week. Assume that the population standard deviation for group runners is known to be 4.6 miles per week. She also interviews a random sample of 45 people who train on their own and finds that they run a mean of 48.8 miles per week. Assume that the population standard deviation for people who run by themselves is 2.4 miles per week. Test the claim at the 0.02 level of significance. Let group runners training for marathons be Population 1 and let individual runners training for marathons be Population 2. Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places.
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