II.Statistical Data Analysis: Solve each given problem using the appropriate teststatistic.1. A survey of public opinion about the criminal justice system asked respondents tocomplete the following statement: "The criminal justice system treats offenders...." Theresearchers found the following distribution of responses by gender of the respondent:Gender of RespondentFemaleMaleToo Lenient1540About Right5035Too Harsh3525a. Is there a relationship between the gender of the respondent and perceptions of punishmentseverity? Use a 5% level of significance and outline each of the steps required in a test ofstatistical significance.b. Would your answer be different if the significance level were 0.01? Show the proof of youranswer.c. What can you conclude about the relationship between gender and perceptions ofpunishment severity?

Given The data is as follows: Gender of Respondent Too Lenient About Right Too Harsh Female 15…

Answered: Statistical Data Analysis: Solve each…

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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. Myers-Briggs: Actors Isabel Briggs Myers was a pioneer in the study of personality types. The following information is taken from MBTI Manual: A Guide to the Development and Use of the Myers-Briggs Type Indicator by Myers and McCaulley (Consulting Psychologists Press). In a random sample of 62 professional actors, it was found that 39 were extroverts. Let p represent the proportion of all actors who are extroverts. Find a point estimate for p. Find a 95% confidence interval for p. Give a brief interpretation of the meaning of the confidence interval you have found. Check Requirements Do you think the conditions np > 5 and nq > 5 are satisfied in this problem? Explain why this would be an important consideration.
INSTRUCTION(S): 1. Analyze the given data using 2 or more statistical tool 2. Interpret results and make your implications.
The table below shows the average income by age group for the residents of one town in the year 1998. The average incomes for each age group are estimates based on a sample of size 100 from each group. Age group Average income 18 - 24 $17,180 25 - 39 $26,661 40 - 54 $32,471 55 – 70 $25,960 Over 70 $18,241 Classify the study as either descriptive or inferential.
1. To understand the cooking and diet patterns of Americans, a research company surveyed 12,340 American adults (age 18 and older) during the year 2014 and asked about a variety of factors including age, gender, yearly income (in US $), and the number of hours spent cooking each week. Answer the following questions regarding the context of the survey: a. WHO is being measured? (What is the sample?) b. WHAT is being measured? (What are the variables?) For each variable, identify whether it is quantitative or categorical.
Consider the following two sample data sets. Set 1: 7 5 3 8 9 Set 2: 8 13 14 2 5 a. Calculate the coefficient of variation for each data set. b. Which data set has less consistency (or more variability)?
(a) TV stations use ratings to decide which shows to keep or cancel. Therefore, the A. C. Nielsen Company collects data on the TV viewing habits of Americans and publishes the information in Nielsen Report on Television. Suppose that you want to use a paired sample to decide whether the mean viewing times of married men and married women differ: 1. Identify the variable. 2. Identify the two populations. 3. Identify the pairs. 4. Identify the paired-difference variable.
A research poll included 1762 randomly selected adults who were asked whether "global warming is a problem that requires immediate government action." Results showed that 975 of those surveyed indicated that immediate government action is required. A news reporter wants to determine whether these survey results constitute strong evidence that the majority (more than 50%) of people believe that immediate government action is required. Complete parts (a) through (c) below. a. What is the best estimate of the proportion of adults who believe that immediate government action is required? The best estimate is ☐ (Round to three decimal places as needed.)
A researcher is looking into the price of round trip airline tickets between LA and NY. The five number summary for the data sets provided below: 1. 240 2.$3753.$ 450 4. $657 5. $890 Complete the following: 1. Interpret the value of the third quartile in a contextualized sentence: Blank (answer options: 25%, 50%, at least 50, at least 25, at least 75, 75%) of _(answer iptions: airline tickets, round trip airline tockets between LA and NY, the price of an airline ticket between Ny and La) are priced_(375 or less, 657, 450, 375, 657, 450) 2. Determine if a ticker priced at 1200 would be an outlier. A ticker priced at 1200 ( answer options: would, eould not) be considered an iutlier because 1200 is (within, not within)_(the interval 93 and 939, the interval -48 and 1080, within 3 sd's of the mean, two standard deviations of the mean)
4. Given the sample data in the table below: 12 10 15 19 23 5 12 10 12 19 10 19 34 19 19 15 a) Determine the mean, median, and mode of this data. Please show your work! 5 12 b) Determine the range and inter-quartile range of this data. Please show your work!
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.
The Wall Street Journal Corporate Perceptions Study 2011 surveyed readers and asked how each rated the quality of management and the reputation of the company for over 250 worldwide corporations. Both the quality of management and the reputation of the company were rated on an excellent, good, and fair categorical scale. Assume the sample data for 200 respondents below applies to this study. Quality of Management Reputation of Company Excellent Good Fair Excellent 40 25 5 Good 35 28 10 Fair 25 17 15 (a) Use a 0.05 level of significance and test for independence of the quality of management and the reputation of the company. State the null and alternative hypotheses. H0: Quality of management is not independent of the reputation of the company.Ha: Quality of management is independent of the reputation of the company. H0: Quality of management is independent of the reputation of the company.Ha: Quality of management is not independent of the…
One of the great difficulties a small restaurant manager faces is to pleaseevery customer who differs widely in age. On a randomly selected evening, this restaurant served 12 customers whose ages reported below: 87 58 54 61 3 35 31 28 3 16 68 36 a) What are the mean, median, and mode of the data? b) What measure of central tendency would you use here? Why? c) Find the ve-number summary of the data. ??

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