The weekly salaries (in dollars) for 10 employees of a small business are glven below.(Note that these are already ordered from least to greatest.)674, 697, 699, 738, 785, 807, 809, 905, 938, 968Suppose that the $968 salary changes to $1188. Answer the following.(a) What happens to the mean?Oit decreases by $It increases by SO It stays the same.(b) What happens to the median?It decreases by $O It increases by $O It stays the same.

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Answered: The weekly salaries (In dollars) for 10…

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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The number of goals for each of a hockey player's seasons is given in the following figure. Find the mean, median, and mode of the number of goals per season for the hockey player. (If more than one mode exists, separate your answers with commas. If an answer does not exist, enter DNE.) mean 45 median mode Season Goals 1979-80 51 1980-81 55 1981-82 92 1982-83 71 1983-84 87 1984-85 73 1985-86 52 1986-87 62 1987-88 43 1988-89 54 Season Goals 1989-90 43 1990-91 41 1991-92 31 1992-93 16 1993-94 38 1994-95 11 1995-96 23 1996-97 25 1997-98 23 1998-99 9
Students on a campus of a college in Wisconsin were asked about their age. The results of this survey are recorded in the table below. Student ages Frequency 17-26 11 27-36 24 37-46 49 57 and over 41 (a) What is the relative frequency for the age group 17-26? (Write your answer IN PERCENTAGE FORM. Round to at least 1 decimal place. Do not include the % symbol in your answer.) Answer: % (b) What is the relative frequency for the the age group 37-46? (Write your answer IN PERCENTAGE FORM. Round to at least 1 decimal place. Do not include the % symbol in your answer.)) Answer: %
The mean defined in the text is sometimes called the arithmetic mean to distinguish it from other possible means. For example, a different mean, called the geometric mean (G.M.), is used in business and economics for finding average rates of change, average rat growth, or average ratios. This mean is defined to be the nth root of the product of the numbers. For example, the geometric mean of 4, 5, and 6 is G.M. = (4 · 5 · 6)/3 V120 z 4.9. (a) Find the arithmetic and geometric means for the numbers 2, 4, 6, 7, 7, 8, and 10. (Round your answers to one decimal place.) arithmetic mean geometric mean (b) The growth rates for three cities are 1.5%, 2.1%, and 0.9%. Compare the arithmetic and geometric means. (Round your answers to two decimal places.) arithmetic mean % geometric mean %
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d. Let’s define a “binge watcher” as someone in the upper 5% of the distribution of minutes watching TV. How many minutes does a “binge watcher” spend per day watching TV? (Round your intermediate calculations and final answer to 1 decimal place.)
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: Number of ninth graders (Frequency) Mean Test Score High School Glenwood 82 262 Central 92 311 Lincoln 67 168 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 82, 92, and 67, whic incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place 80.3. Of course, that is Mean of all ninth grader's scores *

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