7. A recent national survey found that high school students watched an average (mean) of 6.8 movies per month with apopulation standard deviation of 1.8. The distribution of number of movies watched per month follows the normaldistribution. A random sample of 36 college students revealed that the mean number of movies watched last monthwas 6.2. At the .05 significance level, can we conclude that college students watch fewer movies a month than highschool students? For L Exercises 5- 8: (a) State the null hypothesis and the alternate hypothesis. (b) State the decision rule. (c)Compute the value of the test statistic. (d) What is your decision regarding Ho? (e) What is the p-value? Interpret it.

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Answered: For L Exercises 5–L 8: (a) State the…

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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Failure rate for (16) students who took a mathematics test, of whom (12) students passed?? which is (25% 40% (7% 75)).
A purchasing manager for a large university is investigating which brand of LCD projector to purchase to equip their classrooms. Of major concern is the longevity of the light bulbs used in the projectors. The purchasing manager has narrowed down the choice of projector to two brands, Infocus and Proxima, and wishes to determine if there is any difference between the two brands in the mean lifetime of the bulbs used. The purchasing manager obtained eleven projectors of each brand for testing over the last several academic terms. The number of hours the bulbs lasted on each of the eleven projectors is given in the table. Lifetimes of light bulbs (hours) Infocus 804, 753, 846, 900, 1047, 781, 983, 1104, 799, 1007, 858 Proxima 980, 877, 488, 671, 867, 802, 709, 914, 1023, 769, 857 Send data to calculator Send data to Excel Assume that the two populations of lifetimes are normally distributed and that the population variances are equal. Can we conclude, at the 0.05 level of significance,…
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K Are you an impulse shopper? A survey of 800 grocery shoppers indicated that 18% of males and 50% of females make an impulse purchase every time they shop. Assume that the survey consisted of 400 males and 400 females. Complete parts (a) and (b) below. search State the conclusion.. the null hypothesis. There is evidence at the 0.05 level of significance to conclude that there is a difference in the proportion of males and females who make an impulse purchase every time they shop. b. Find the p-value in (a) and interpret its meaning. The p-value is (Round to three decimal places as needed.). Interpret the p-value. The p-value is the probability that in a random sample of 800 adults, the difference between the proportions of males and females who make an impulse purchase the difference in this sample, assuming that the proportion of males who make an impulse purchase every time every time they shop will be the proportion for females in the population. they shop is #1 I C 86°F VSIA 441
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For L Exercises 5–L 8: (a) State the null hypothesis and the alternate hypothesis. (b) State the decision rule. (c) Compute the value of the test statistic. (d) What is your decision regarding H? (e) What is the p-value? Interpret it.