3. Are health and happiness related? The following data represents the level of happiness and level of health for a random sample of individuals from the General Social Survey. Does the evidence suggest that health and happiness are related. Let a=0.05 Education/Health Excellent Less than High Good Fair Рoor 72 202 199 62 School High School Junior College 465 877 358 108 80 138 49 11 Bachelor 229 276 64 12 Graduate 130 147 32

3. Are health and happiness related? The following data represents the level of happiness and level of health for a random sample of individuals from the General Social Survey. Does the evidence suggest that health and happiness are related. Let a=0.05 Education/Health Excellent Less than High Good Fair Рoor 72 202 199 62 School High School Junior College 465 877 358 108 80 138 49 11 Bachelor 229 276 64 12 Graduate 130 147 32

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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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Which of the following is not a measure of central tendency?A. the medianB. the modeC. the meanD. the rangeE. all of the above show measure of central tendency
Over the first five years of owning her car, Gina drove about 12,700 miles the first year, 15,478 miles the second year, 12,675 the third year, 11,850 the fourth year, and 13,075 the fifth year. a. Find the mean, median, and mode of this data. b. Explain which measure of central tendency will best predict how many miles Gina will drive in the sixth year. a. mean= 12,700; median= 13,156; no mode; the mean is the best choice because it is representative of the entire data set. b. mean= 13,156; median= 12,700; mode= 3,628; the median is the best choice because it is not skewed by the high outlier. c. mean= 13,156; median= 12,700; no mode; the mean is the best choice because it is representative of the entire data set. d. mean= 13,156; median= 12,700; no mode; the median is the best choice because it is not skewed by the high outlier.
Rhodes Junior High School has 580 students in grades 7 and 8. The school's administration collected data about how many of their students wear glasses. NeverWear Glasses SometimesWear Glasses AlwaysWear Glasses Totals Grade 7 Boys 88 10 37 135 Grade 7 Girls 90 4 47 141 Grade 8 Boys 76 3 80 159 Grade 8 Girls 92 7 46 145 What is the relative frequency of 8th grade boys who always wear glasses? a 50.6% b 27.2% c 20.2% d 13.8%
A sample of 25 freshmen at a major university completed a survey that measured their degree of racial prejudice (the higher the score, the greater the prejudice) Compute the median and mean for these data? 10 43 30 30 45 40 12 40 42 35 45 25 10 33 50 42 32 38 11 47 22 26 37 38 10
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Consider the following ordered data. 4 7 7 8 9 9 10 11 12 (a) Find the low, Q1, median, Q3, and high.
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There are three hospitals in the Tulsa, Oklahoma, area. The following data show the number of outpatient surgeries performed on Monday, Tuesday, Wednesday, Thursday, and Friday at each hospital last week. At the 0.05 significance level, can we conclude there is a difference in the mean number of surgeries performed by the hospital or by day of the week? Number of Surgeries Performed Day St. Luke's St. Vincent Mercy Monday 14 18 24 Tuesday 20 24 14 Wednesday 16 22 14 Thursday 18 20 22 Friday 20 28 24 b. State the decision rule for treatments: C. Also, state the decision rule for blocks. d . Compute SST, SSB, SS total, and SSE and complete an ANOVA table. (Round your SS, F to 2 decimal places, MS, p-value to 4 decimal places. (Attached as an image)
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In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean Test Score Number of ninth graders (Frequency) Glenwood 81 284 Central 95 323 Lincoln 69 154 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 81, 95, and 69, which is 81.7. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. mean of all ninth grader's scores =
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean Test Score Number of ninth graders (Frequency) Glenwood 79 279 Central 94 349 Lincoln 70 161 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 79, 94, and 70, which is 81. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. Mean of all ninth grader's Scores =
4. In an effort to estimate the size of elk herds wintering in Rocky Mountain National Park, the rangers used a small airplane to spot count groups of elk in the park. They found 15 groups of elk and recorded the size of each group as: 21 15 19 16 18 17 17 20 25 7 7 16 10 16 18 12 Compute the mean, the median and the mode of the data.