The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7to 12). One question asked was "What do you think are the chances you will be married in the next10 years?" Here is a two-way table of the responses by gender:HP SAssOpinionFemaleMalechaAlmost no chance119114139156Some chance but probably notA 50-50 chance446493A good chanceAlmost certain7187281177759a. How many individuals are described in this table?b. How many females were among the respondents?C. The percent of females among the respondents was about

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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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C6. How many hours per week do you spend on e-mail? Data are presented here for a GSS sample of 99 men and women, who each reported the number of hours they spent per week on e-mail. a. Compute the cumulative frequency and cumulative percentage distribution for the data. b. What proportion of the sample spent 3 hours or less per week on e-mail? C. What proportion of the sample spent 6 or more hours per week on e-mail? d. Construct a graph that best displays these data. Explain why the graph you selected is appropriate for these data. E-mail Hours per Week Frequency 19 20 1 13 2 2 4 6. 6. 2 8. 1 6. 23 10 or more 7.
Social media is becoming more and more popular around the world. Suppose a website provides estimates of the number of social media users in various countries. Assume that the results for surveys in the United Kingdom, China, Russia, and the United States are as follows. Use Social Media Yes No United Kingdom 480 320 Country China Russia 235 265 343 Need Help? 357 O Ho: All population proportions are not equal. H₂: P₁ = P₂ = P3 = P4 Read It OHO: Not all population proportions are equal. Ha: P₁ = P₂ = P3 = P4 (a) Conduct a hypothesis test to determine whether the proportion of adults using social media is equal for all four countries. State the null and alternative hypotheses. O Ho: P₁ = P₂ = P3 = P4 H₂: Not all population proportions are equal. United States 620 380 Ho: P₁ = P₂ = P3 = P4 H: All population proportions are not equal. Find the value of the test statistic. (Round your answer to two decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value =…
1. In 1990 Central College's marching band had 50 women and 40 men as members; in 2010 the Central band had 60 women and 50 men. a. Find the percent of women in the band in 1990 and 2010. b. Find the change in percent of women in the band from 1990 to 2010. c. Find the change in the number of band members from 1990 to 2010. d. Find the percent change in the size of the band from 1990 to 2010. e. Find the percent change in the number of women band members from 1990 to 2010. f. Find the percent change in the percent of women band members (relative change) from 1990 to 2010.

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a. How many individuals are described in this table? b. How many females were among the respondents? c. The percent of females among the respondents was about 96.