A study by a reputable research group captured multitasking activities of adults who use different devices while watching TV. The study reported that 321 of 442 (73%) smartphone users sampled,189 of341 (55%) computer users sampled, and 136 of 260 (52%) tablet users sampled used their device to check social media unrelated to the video content while watching TV. b. Determine the value of chi Subscript STAT Superscript 2, c. Determine the p-value in (a) and interpret its meaning. d. If appropriate, use the Marascuilo procedure and alpha equals 0.05 to determine which groups differ.

A study by a reputable research group captured multitasking activities of adults who use different devices while watching TV. The study reported that 321 of 442 (73%) smartphone users sampled,189 of341 (55%) computer users sampled, and 136 of 260 (52%) tablet users sampled used their device to check social media unrelated to the video content while watching TV. b. Determine the value of chi Subscript STAT Superscript 2, c. Determine the p-value in (a) and interpret its meaning. d. If appropriate, use the Marascuilo procedure and alpha equals 0.05 to determine which groups differ.

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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According to the National Health and Nutrition Examination Survey (NHANES) sponsored by the U.S. government, a random sample of 712 males between 20 and 29 years of age and a random sample of 1,001 males over the age of 75 were chosen and the weight of each of the males were recorded (in kg). Do the data provide evidence that the younger male population weighs more (on average) than the older male population? Use “Y” for ages 20-29 and “S” for ages 75+. It was found that x̅Y=83.4, sY=18.7, x̅S=78.5, and sS=19.0. A) What are the correct null and alternative hypotheses? B)What is the parameter of interest? The difference between the mean weight of all males ages 20-29 and the mean weight of all males ages 75+ The mean weight (in kg) The difference between the mean weight of the sample of males ages 20-29 and the mean weight of the sample of males ages 75+ The mean difference between the weights of males ages 20-29 and males ages 75+ c)Is the randomness condition met for…