A researcher was interested in comparing the resting pulse rates of people who exercise regularly and of those who do not exercise regularly. Independent simple random samples of 16 people who do not exercise regularly and 12 people who do exercise regularly were selected and the resting pulse rates (in beats per minute) were recorded. Test the claim that the mean resting pulse rate of people who exercise regularly is larger than the mean resting pulse rate of people who do not exercise regularly.

A researcher was interested in comparing the resting pulse rates of people who exercise regularly and of those who do not exercise regularly. Independent simple random samples of 16 people who do not exercise regularly and 12 people who do exercise regularly were selected and the resting pulse rates (in beats per minute) were recorded. Test the claim that the mean resting pulse rate of people who exercise regularly is larger than the mean resting pulse rate of people who do not exercise regularly.

Name: What is the test statistic?p – POF(n – 1)? . s2Ox?(F1 – T2) – (41 – µ
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Description: What is the test statistic?p – POF(n – 1)? . s2Ox?(F1 – T2) – (41 – µ2)(P1 – P2) – (P1 – p2)(71 – 72) – (H1OtI - Hdtd(71 – 72) – (H1 – µ2)||||+|| A researcher was interested in comparing the resting pulse rates of people who exercise regularly and o

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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A comprehensive study conducted by the National Institute of Child Health and Human Development tracked more than 1000 children from an early age through elementary school. The study concluded that children who spent more than 30 hours a week in child care before entering school tended to score higher in math and reading when they were in the third grade. The reasearchers cautioned that the findings should not be a cause for alarm because the differences were found to be small. Explain how the difference between the mean math score for the child care group and the overall mean for the third graders could be small but the researchers could still reach the conclusion that the mean for the child care group is significantly higher than the overall mean.
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Volunteers who had developed a cold within the previous 24 hours were randomized to take either zinc or placebo lozenges every 2 to 3 hours until their cold symptoms were gone. Twenty-five participants took zinc lozenges, and 23 participants took placebo lozenges. For the placebo group, the mean overall duration of symptoms was x, 7.7 days, and the standard deviation was 1.4 days. The mean overall duration of symptoms for the zinc lozenge group was x, 4.2 days, and the standard deviation of overall duration of symptoms was 1.4 days. n USE SALT (a) Calculate x, - x, difference in sample means. days 2x - 'x Compute the unpooled s.e.(x, – x,) standard error of the difference in means. (Round your answer to four decimal places.) s.e.(x1 - X2) = days (b) Compute a 95% confidence interval for the difference in mean days of overall symptoms for the placebo and zinc lozenge treatments. Use the unpooled standard error and use the smaller of n1 1 and n2 1 as a conservative estimate of degrees of…
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A study was conducted that measured the total brain volume (TBV) (in mm³) of patients that had schizophrenia and patients that are considered normal. The first table contains the TBV of the non- schizophrenic patients and the second table contains the TBV of schizophrenia patients. Compute a 99% confidence interval for the difference in TBV of non-schizophrenic patients and patients with Schizophrenia. Prior studies say nothing about the equality of variances. Round to the nearest whole number. Total Brain Volume (in mm³) of Non-Schizophrenic Patients 1371703 1409670 1528399 1541583 1652404 1668272 1606774 1497601 1525728 1487617 1556951 1484397 1455624 1430001 1297891 1365193 1362972 1353428 1371403 1663617 1415307 1756698 1340146 1673225 1456134 1427036 1144683 1542673 1549862 1472556 1483211 1528697 1381758 1265598 Total Brain Volume (in mm³) of Schizophrenia Patients 1348795 1093447 1575546 1183986 1363837 1137626 1342077 1339149 1317181 1570744 1409139 1242976 1511787 1171081…
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