We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 520. So, wechoose a random sample of exam scores. The sample has a mean of 501 and a standard deviation of 80.For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic.Round your answers to two decimal places.(a) The sample has size 14, and it is from a population with a distribution about which we know very little.OZ=Ot -0O It is unclear which test statistic to use.(b) The sample has size 19, and it is from a normally distributed population with a known standard deviation of 75.Oz=0Ot=O It is unclear which test statistic to use.

Given dataclaim : μ≠520x¯ = 501s = 80

Answered: We want to conduct a hypothesis test of…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 522. So, we choose a random sample of exam scores. The sample has a mean of 503 and a standard deviation of 76 For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. The sample has size 13,and it is from a normally distributed population with an unknown standard deviation. z= t= =z
Use the following information for Questions 19-21. Teresa works at a medium-sized doctor's office and notices that appointment times are approximately normally distributed with mean 25 minutes and standard deviation 10 minutes. A patient complains that the wait times are too long and that her average wait time is much longer than 25 minutes. Teresa decides to conduct a test with a = 0.05 and the following hypotheses Ho: H=25 vs. Ha:μ> 25 Teresa randomly selects 25 appointments and records their times and finds their mean. The P-value of the test of the null hypothesis is O the probability the null hypothesis is false. O the probability, assuming the null hypothesis is true, that the test statistic will take a value at least as extreme as that actually observed. O the probability, assuming the null hypothesis is false, that the test statistic will take a value at least as extreme as that actually observed. O the probability the null hypothesis is true.
We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 478. we choose a random sample of exam scores. The sample has a mean of 485 and a standard deviation of 73 For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 95 , and it is from a non-normally distributed population with a known standard deviation of 77 . z =? t=? It is unclear which test statistic to use.? (b) The sample has size 17 , and it is from a normally distributed population with an unknown standard deviation. z=? t=? It is unclear which test statistic to use.?
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We want to conduct a hypothesis test of the claim that the population mean score on a nationwide examination in anthropology is different from 503. So, we choose a random sample of exam scores. The sample has a mean of 510 and a standard deviation of 74. For each of the following sampling scenarios, choose an áppropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 13, and it is from a population with a distribution about which we know very little. O z = OtD It is unclear which test statistic to use. (b) The sample has size 19, and it is from a normally distributed population with an unknown standard deviation. s ? It is unclear which test statistic to use.
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