A survey was administered to a nationwide random sample of 199 adults who were asked to reporttheir monthly cell phone bill (in dollars). A histogram of the results is shown below.0.35-Relative Frequency0.300.250.200.150.100.050 50 100 150 200 250 300 350 400 450Cell Phone Bill ($ per month)Which of the following statements must be false?(A) The distribution of monthly cell phone bills is skewed to the right.(B) The mean monthly cell phone bill is higher than the median monthly cell phone bill.(C) The number of respondents whose monthly cell phone bill is less than $50 is approximately 32.(D) There were no reported monthly cell phone bills between $300 and $350.(E) Sixteen percent of respondents reported monthly cell phone bills of more than $50.

First, let's analyze the given data. We have the relative frequencies for different ranges of…

Answered: A survey was administered to a…

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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A recent poll of 3,057 individuals asked: “What’s the longest vacation you plan to take this summer?” The following relative frequency distribution summarizes the results. Response Relative Frequency A few days 0.21 A few long weekends 0.18 One week 0.36 Two weeks 0.25 a. Construct the frequency distribution of these data. (Round your answers to the nearest whole number.) b. Construct a bar chart for this data. (Before plotting the points, round the "Frequency" to the nearest whole number. Click on the x-axis exactly below the "0" point and then drag the bar till it reaches the correct answer.)
(b) Calculate the mean, median mode and standard deviation for the following data: 4600- 4800 75 4800- 5000 5000- 5200 5200- 5400 50 4000- 4400- Class size 4200 22 4200- 4400 38 4600 Freque 65 80 70
An experiment was conducted to determine if exposure to an advertisement would change attitude toward a product. Each subject’s attitude before and after exposure to the advertisement was recorded, using a valid ten point scale. The results indicated: Subject Attitude Post Exposure Attitude Pre Exposure 1 6 4 2 8 5 3 6 6 4 4 3 5 7 2 6 6 3 7 9 6 8 7 6 9 8 5 10 8 6 Set up hypotheses and test to determine if the mean attitude toward the product increased as a result of exposure to the advertisement. (Note: these samples must be regarded as dependent, as each subject served as both a control (pre-exposure) and a treatment (post exposure). Fully interpret your result.
The distribution of yearly income of people (thousand $) was as follows: Class <31 31-40 41-50 51-60 61-70 71-30 81-90 91-100 101-110 111-120 Frequency 7 13 5 12 23 7 10 4 14 3 Find the mean, median, and mode for the given data
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.
An employment information service claims the mean annual salary for senior level product engineers is $98,000. The annual salaries (in dollars) for a random sample of 16 senior level product engineers are shown in the table to the right. At a =0.01, test the claim that the mean salary is $98,000. Complete parts (a) through (e) below. Assume the population is normally distributed. Annual Salaries 100,634 82,467 102,518 91,169 96,401 93,603 112,681 O 74,214 77,029 76,190 103,988 104,007 82,125 84,983 110,381 80,921 (a) Identify the claim and state Ho and Ha. Ho: Ha (Type integers or decimals. Do not round.) The claim is the hypothesis. (b) Use technology to find the critical value(s) and identify the rejection region(s). The critical value(s) is/are to =. %3D (Use a comma to separate answers as needed. Round to two decimal places as needed.) Choose the graph which shows the rejection region. O A. O B. Oc. O D. -to to t> to 0 to - to 0 to 4 - to 0 6 to 0 Click to select your answer(s).…
In a Normal distribution, the Empirical Rule states that... ["", "", "", "", ""] of the data is within 1 standard deviation of the mean, ["", "", "", "", ""] of the data is within 2 standard deviation of the mean, and ["", "", "", "", ""] of the data is within 3 standard deviation of the mean.
Students were asked, "How stressed have you been in the last week, on a scale of 0 to 10, with 0 being not at all stressed and 10 being as stressed as possible?" The students' responses are shown in the frequency distribution below. Construct a histogram and frequency polygon for the data. Stress Rating 0 1 2 3 4 5 6 7 8 9 10 Frequency 2 1 1 18 19 19 12 27 25 12 11
The table below shows the frequency distribution of the rainfall on 52 consecutive Tuesdays in a certain city. Use the frequency distribution to construct a histogram. Do the data appear to have a distribution that is approximately normal? Class 0-0.19 0.20 -0.39 0.40 -0.59 0.60-0.79 0.80 -0.99 1.00-1.19 1.20-1.39 Frequency 22 13 4 1 5 6 1 Choose the correct histogram below. OA. OB. O C. 30- 20- 10- 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 30- 20- 10- 0+ 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 30- 20- 10- 0+ 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Q Q Q Do the data appear to have a distribution that is approximately normal? O A. No, it is approximately uniform. OB. No, it is not symmetric. OC. No, it has no obvious maximum. O D. Yes, it is approximately normal.
A random survey is collected on the number of children of different age groups who play in government parks and the information is tabulated in the frequency distribution given below: Age (years) Number of children 1 - 2 8 2 - 4 10 4 - 7 18 7 - 9 10 9 - 11 12 11 -15 6…
2. Find out (i) Mean (ii) Median and (iii) Standard Deviation for the following data. Class 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 Interval Frequency 15 18 22 28 32 26 25 17
Question : Find the Coefficient of Mean deviation for the following data Classes Frequency ( ) 10.8-14.7 109 14.8-18.5 118 19.6-20.7 127 20.8-30.6 131 30.8-40.7 140 40.8-50.7 116 50.8-60.7 109 60.8-70.7 119 70.8-80.7 101 80.8-90.7 98 90.8-100.7 76

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