If we have a large voluntary response sample consisting of weights of subjectswho chose to respond to a survey posted on the Internet, can a graph help toovercome the deficiency of having a voluntary response sample?Choose the correct answer below.O A. No, a graph cannot help to overcome the deficiency. If the sample is a badsample, there are no graphs or other techniques that can be used tosalvage the data.O B. Yes, a graph can help to overcome the deficiency. Certain graphs thathide any specific values in the data, such as pie charts, can be used tohide deficiencies in the sampling technique.O C. No, a graph cannot help to overcome the deficiency Before graphing, allinaccurate values and outliers must be removed from the data set.O D. Yes, a graph can help to overcome the deficiency. Any graph that is givenwith a sufficiently accurate description of any deficiencies in the samplingtechnique is no longer considered biased.Next Construct a stem-and-leaf plot of the test scores67, 72, 86, 75, 89, 89, 88, 90, 98, 100. How does the stem-and-leaf plot show thedistribution of these data?Construct the stem-and-leaf plot. Choose the correct answer below.O A.B.O B.C.D.O D.StemLeavesStemLeavesStem LeavesStemLeaves9.9.76.26252525669 88.6 9968.6 8996 9986.0 90 86.0 86.0710101010How does the stem-and-leaf plot show the distribution of these data?O A. The lengths of the rows are similar to the widths of bars in a histogram;longer rows of data correspond to smaller frequencies.O B. The lengths of the rows are similar to the heights of bars in a histogram%3Blonger rows of data correspond to higher frequencies.O C. The lengths of the rows are similar to the heights of bars in a histogramBlonger rows of data correspond to smaller frequencies.O D. The lengths of the rows are similar to the widths of bars in a histogram;longer rows of data correspond to higher frequencies,Next

The provided data are in increasing order: 67,72,75,86,88,89,89,90,98,100 Construct the…

Answered: Construct the stem-and-leaf plot.…

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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If you are given a set of sample data and want to determine if it is reasonable to assume that the sample data came from a normal population, briefly discuss the graphs that you would need to make and what you would be looking for in each graph.
In a poll, a random sample of 2163 adults aged 18 and over was asked, “When you see an ad emphasizing that a product is made in your country, are you likely to buy it, less likely to buy it, or neither more nor less likely to buy it?”. The results of the survey are presented in the side by side graph.
In a poll, a random sample of 2163 adults (aged 18 and over) was asked, "When you see an ad emphasizing that a product is made in your country, are you more likely to buy it, less likely to buy it, or neither more nor less likely to buy it?" The results of the survey are presented in the side-by-side graph. Complete parts (a) through (d) below. (a) What proportion of 18- to 34-year-old respondents are more likely to buy when made in their country? What proportion of 35- to 44-year-old respondents are more likely to buy when made in their country? The proportion of 18- to 34-year-old respondents is enter your response here. The proportion of 35- to 44-year-old respondents is enter your response here. Part 2 (b) What age group has the greatest proportion who are more likely to buy when made in their country? A. 55+ yrs B. 35-44 yrs C. 18-34 yrs D. 45-54 yrs Part 3 (c) Which age group has a majority of respondents who…
(a) What method or sampling technique was used to conduct the experiment depicted in the graph(s)? (b) What do the data show?
The authors of a paper describe an experiment to evaluate the effect of using a cell phone on reaction time. Subjects were asked to perform a simulated driving task while talking on a cell phone. While performing this task, occasional red and green lights flashed on the computer screen. If a green light flashed, subjects were to continue driving, but if a red light flashed, subjects were to brake as quickly as possible. The reaction time (in msec) was recorded. The following summary statistics are based on a graph that appeared in the paper. n = 49 x = 525 s = 65 Suppose that the researchers wanted to estimate the mean reaction time to within 5 msec with 95% confidence. Using the sample standard deviation from the study described as a preliminary estimate of the standard deviation of reaction times, compute the required sample size. (Round your answer up to the nearest whole number.) n =
10.46 Social scientists have produced convincing evidence that parental divorce is negatively associated with the educational success of their children. The paper “Maternal Cohabitation and Educational Success” [Sociology of Education (2005) 78:144–164] describes a study thataddresses the impact of cohabiting mothers on the success of their children in graduating from high school. The following table displays the educational outcome by type of family for 1,168 children.a. Display the above data in a graph to demonstrate any differences in the proportions of high school graduates across family types.b. Is there significant evidence that the proportions of students who graduate from high school are different across the various family types?
Draw the appropriate graph for each of the data sets given below and give a short interpretation of your graphs
Suppose Ted is creating a football team in a video game that features many NFL players. He decides to identify players who are outliers in a few statistics he has chosen. Currently, he's looking at wide receivers. The game includes the top 100 receivers in 2012 by number of receptions. Ted, however, is more interested in receiving yards, and the table shows the five-number summary of the available players in the game (in yards): Minimum 1st quartile (Q1) Median 3rd quartile (Q3) Maximum 258.0 549.5 743.0 936.5 1964.0 The mean is 787.6 yds with a standard deviation of 311.3 yds. Ted first calculates the interquartile range (IQR). Next, to determine suspected outliers, he calculates Q1−1.5⋅???Q1−1.5⋅IQR and Q3+1.5⋅???Q3+1.5⋅IQR. Specify those results to at least one decimal place. Q1−1.5⋅???Q1−1.5⋅IQR = Q3+1.5⋅???Q3+1.5⋅IQR =
A researcher wants to determine if there is a relationship between income earned by siblings and birth order in families of three siblings. What type of study must the researcher use in this situation? A.experimental B.observational
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(a) The researcher is concerned that older persons may not be knowledgeable of the COFLU-20. As such, he is interested in investigating the association between the age of the respondents and their knowledge level. Table 2 below shows the knowledge level of respondents, by age group. Table 2 Age Group Knowledge Level Total Poor Satisfactory Good 18 - 25 33 16 13 62 26 - 34 30 18 12 60 35 - 44 29 14 12 55 45 - 54 36 16 18 70 55 - 75 17 14 22 53 Total 145 78 77 300 Conduct a test, at the 5% level of significance, to determine whether the data provided sufficient evidence to conclude that an association exists between age group and knowledge level. (i) State the hypotheses to be tested: H0: H1: Calculate: (ii) state the degrees of freedom for this test (iii)…
a) The researcher is concerned that older persons may not be knowledgeable of the COFLU-20. As such, he is interested in investigating the association between the age of the respondents and their knowledge level. Table 2 below shows the knowledge level of respondents, by age group. Table 2 Age Group Knowledge Level Total Poor Satisfactory Good 18 - 25 33 16 13 62 26 - 34 30 18 12 60 35 - 44 29 14 12 55 45 - 54 36 16 18 70 55 - 75 17 14 22 53 Total 145 78 77 300 Conduct a test, at the 5% level of significance, to determine whether the data provided sufficient evidence to conclude that an association exists between age group and knowledge level. (i) State the hypotheses to be tested: H0: H1: Calculate: (ii) state the degrees of freedom for this test (iii)…

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