Marketing companies have collected data implying that teenage girls use more ring tones on their cellular phones than teenage boys do. In one particular study of 40 randomly chosen teenage girls and boys (20 of each) with cellular phones, the mean number of ring tones for the girls was 3.4 with a standard deviation of 1.4. The mean for the boys was 1.7 with a standard deviation of 0.7. Conduct a hypothesis test at the 5% level to determine if the means are approximately the same or if the girls' mean is higher than the boys' mean. (i) State the distribution to use for the test. (Enter your answer in the form z or tar where df is the degrees of freedom. Round your answer to two decimal places.) (ii) What is the test statistic? (If using the z distribution round your answer to two decimal places, and if using the t distribution round your answer to three decimal places.) (iii) What is the p-value? (Round your answer to four decimal places.)

Marketing companies have collected data implying that teenage girls use more ring tones on their cellular phones than teenage boys do. In one particular study of 40 randomly chosen teenage girls and boys (20 of each) with cellular phones, the mean number of ring tones for the girls was 3.4 with a standard deviation of 1.4. The mean for the boys was 1.7 with a standard deviation of 0.7. Conduct a hypothesis test at the 5% level to determine if the means are approximately the same or if the girls' mean is higher than the boys' mean. (i) State the distribution to use for the test. (Enter your answer in the form z or tar where df is the degrees of freedom. Round your answer to two decimal places.) (ii) What is the test statistic? (If using the z distribution round your answer to two decimal places, and if using the t distribution round your answer to three decimal places.) (iii) What is the p-value? (Round your answer to four decimal places.)

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Description: Marketing companies have collected data implying that teenage girls use more ring tones on theircellular phones than teenage boys do. In one particular study of 40 randomly chosen teenagegirls and boys (20 of each) with cellular phones, the mean num

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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