1 GmailST"FCloudy"ttabcaps lockYouTube Maps SThe creator of the t-test, Gosset (who worked under the pseudonym Student)studied the effects of laevohysocyamine hydrobromide (LH) on sleep. Thequestion was, does the chemical provide additional hours of sleep? He studieda random sample of 10 people using LH and these are the additional hours ofsleep and found the average additional hours of sleep to be 2.33 hours, with astandard deviation of s = 2.00 hours.escConstruct and interpret a 95% confidence interval for the average additionalsleep that would be obtained for the population of all people using LH. Roundto the nearest thousandth.95% CI: (fnIvec.instructure m/courses/3662733/quizzes/10082290/takeF17QAEZⓇ2WSXaltA3E+D$4CQ SearchRF5VTGA6BYH7NUJ8MIprt scK(9<.altOhomQO UpdateOL30ctrl^ GAp<9:55 PM4/17/20230LCZEZZ ISLW15cw 127LLEVE S962BESS CEN01110 SESESECES DELIC(5958 19ZZELEZZE OCEZS2 LYSBL00645 32LEZSZZYS9451426909coses19:2905081520 10645.2392221 1910*5394 195C3000 C20140CO 10230213680SYCES SLLLL09894504529001 069LL39+02 605GEBCCLS2950215125 50 VC1129111ZEL 9596L2190505088 2168c45001058 LLLZL90088 61640C994 820Y81969-6106(92860925252.45taa

Sample size, n=10 Sample mean, x¯=2.33 Sample sd, s=2

Answered: The creator of the t-test, Gosset (who…

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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Based on sample data, newborn males have weights with a mean of3250.3g and a standard deviation of 726.3g. Newborn females have weights with a mean of 3061.3g and a standard deviation of 546.4g. Who has the weight that is more extreme relative to the group from which they came: a male who weighs 1600g or a female who weighs 1600g? Since the z score for the male is z= ?
Sony would like to test the hypothesis that the average age of a PlayStation user is different from the average age of an Xbox user. A random sample of 32 PlayStation users had an average age of 33.7 years while a random sample of 36 Xbox users had an average age of 35.6 years. Assume that the population standard deviation for the age of PlayStation and Xbox users is 3.7 and 3.5 years, respectively. Sony would like to set α = 0.05. The p-value for this hypothesis test would be
The mean pulse rate for adult males is approximately 61.4 beats per minute. In a sample of 27 overweight males, the mean pulse rate was 62.1 beats per minute with a standard deviation of 4.19 beats per minute. Test at a = 0.10 whether these findings suggest that the mean pulse rate for all such overweight males is significantly greater than 61.4. You obtain a sample of size 27 with a mean of 62.1 and a standard deviation of 4.19. You believe that the population is normally distributed. (a). The null and alternative hypotheses are O Ho: ữ = 62.1 Ha:ữ > 62.1 Ho:µ = 61.4 Ha: µ > 61.4 Ο H0: μ = 61.4 На:р 62.1 Part 2 of 4 (b). The test statistic is (use 4 decimal places)
A coach believes that her volleyball team is more athletic than the average volleyball team in America. (Think of that as her research hypothesis.) We know that the average volleyball team in America has a score of 100 on the Standard Test for Athleticism (the STA; not to be confused with the SAT). The coach tests her 25 players and gets an average STA score for them of 109, with a standard deviation of 15. The coach sets her alpha level at .05. Given the results of her study, what decision should she make? Reject the null hypothesis, since she knows that her team plays so well. Reject the null hypothesis, since the mean is above 100 Reject the null hypothesis, since the inferential Z-score is greater than the critical value when alpha is at .05 Do not reject the null hypothesis; the results are likely due to chance factors.
Sony would like to test the hypothesis that the average age of a PlayStation user is different from the average age of an Xbox user. A random sample of 32 PlayStation users had an average age of 33.7 years while a random sample of 36 Xbox users had an average age of 35.6 years. Assume that the population standard deviation for the age of PlayStation and Xbox users is 3.7 and 3.5 years, respectively. Sony would like to set alpha is 0.10. The critical value for this hypothesis test would be
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The herbal supplement ginkgo biloba is advertised as producing an increase in physical strength and stamina. To test this claim, a sample of n = 120 adults is obtained and each person is instructed to take the regular daily dose of the herb for a period of 30 days. At the end of the 30 days each person is tested on a standard treadmill task for which the average age-adjusted score is μ = 15. The individuals in the sample produce a mean score of M = 17.4 with SS = 1260. Are these data sufficient to conclude that the herb had a statistically significant effect? Conduct as a two-tailed test, using all hypothesis steps with p < .05. BONUS POINTS: Calculate the 95% confidence interval
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