The salaries of the employees at four companies are summarized below. Answer the questions about them.Company A: The range of salaries is $56 000 and the mean salary is $34 000.Company B: The range of salaries is $57 000 and the mean salary is $38 000.Company C: The range of salaries is $64 000 and the mean salary is $33 000.Company D: The range of salaries is $62 000 and the mean salary is $37 000.(a) Based on the information above, which company's salaries have the least variability?O Company AO Company BO Company CO Company D(b) Based on the information above, which company has the lowest salaries on average?O Company AO Company BO Company CO Company D

Answered: Image /qna-images/answer/c6790b66-51b2-4ce7-8ab5-598dbd4b6032.jpg

Answered: (a) Based on the information above,…

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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Groups: 1 = 5-25 years, 2 = 26-59 years, 3 = 60-92 years Which of the following statements is true of Group 2’s mean FIQ score? Group of answer choices: 1. Group 2’s mean FIQ score is different from the mean FIQ scores of Groups 1 and 3 2. Group 2’s mean FIQ score is not different from the mean FIQ scores of Groups 1 and 3 3. Group 2’s mean FIQ score is significantly higher than the mean FIQ score of Group 1 but is significantly lower than the mean FIQ score of Group 3 4. Group 2’s mean FIQ score is not different from the mean FIQ score of Group 1 but is significantly higher than the mean FIQ score of Group 3 5. Group 2’s mean FIQ score is not different from the mean FIQ score of Group 1 but is significantly lower than the mean FIQ score of Group 3 6. None of the above
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The accompanying table gives the number of men 65 years or older in the United States and the percentage of men age 65 or older living below the poverty level. Men 65 years or older, m Percentage below poverty level, p (millions) 8.3 Year m(x) 1970 1980 1985 1990 1997 2000 10.3 = 11.0 12.6 14.0 14.4 million is the number of ---Select--- 20.2 11.1 (a) Using time as the input, fill in the blanks to complete a linear model for the data set for the number men 65 years or older in the United States. (Let x be the years since 1970. Round all numerical values to three decimal places.) 1(x) = m(x) • p(x)/ 100 million men. 8.7 7.8 million men per year million men per year 7.0 7.5 Using time as the input, fill in the blanks to complete a quadratic model for the data set for the percentage of men age 65 or older below poverty level. (Let x be the years since 1970. Round all numerical values to three decimal places.) p(x) % is the percentage of ---Select--- where x is ---Select--- I The total…
Is there a relationship between test scores of persons who have gone through a certain job training program and their subsequent performance on the job. Poor Fair Good Total Below avg. 67 64 25 156 Average 42 76 56 174 Above 10 23 37 70 Totals 119 163 118 400 State the conclusion.
Scenario: A guidance counselor wanted to know if anxiety differs based on time (first day of class in relation to the last day of class), and if this differs based on year in school (as a freshman, sophomore, junior, or senior). She collected data on a single group of students across their entire high school career at these eight time points — first and last day of freshman, sophomore, junior, and senior year. Anxiety was measured using a standardized scale ranging from 0 — 50, with higher scores indicating greater anxiety. Question: If p = .014 for the interaction of Time x Academic Year, what should the researcher conclude? Group of answer choices The interaction is not significant; no additional analyses are needed to interpret it. The interaction is significant; no additional analyses are needed to interpret it. The interaction is not significant; run correlated groups t-tests for post hoc analyses. The interaction is significant; for post hoc analyses, split the file…
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Example 6.9 Given the set of numbers 2, 5, 8, 11, 14 and 2, 8, 14, find (a) the mean of each set, (b) the variance of each set, (c) the mean of the combined or 'pooled' sets, and (d) the variance of combined or pooled sets.
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The following data contains days when road rage occurred according to a study. The goal of the study is to determine when road rage occurs most often. M, Sa, F, Tu, Su, F, Tu, W, F, F, F, M, F, Th, F, W, Th, Sa, F, W, Tu, Th, F, F, W, Th, M, Th, F, M, Sa, Tu, F, Tu, F, F, Su, W, Th, M, F, F, F, Su, F, M, Tu Find the mode of the above data. Mode =
Is there a relationship between Facebook use and age among college students? The following two-way table displays data for the 219 students who responded to the Age Younger (18–22) Middle (23–27) Older (28 and up) Facebook user? Yes 78 49 21 No 4 21 46 What percent of the students who responded were Facebook users? What percent of the students in the sample were aged 28 or older? What percent of the students who responded were older Facebook users? What percent of the Facebook users in the sample were younger students? Find the distribution of Facebook use for each of the three age groups. Make a stacked bar graph to compare these Describe what the graph in part (e) reveals about the association between age and Facebook

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(a) Based on the information above, which company's salaries have the least variability? O Company A Company B Company C Company D (b) Based on the information above, which company has the lowest salaries on average? O Company A O Company B O Company C O Company D