Many people believe that criminals who plead guilty tend to get lighter sentences than those who are convicted in trials. The accompanying table summarizes randomlyselected sample data for defendants in burglary cases. All of the subjects had prior prison sentences. Use a 0.05 significance level to test the claim that the sentence(sent to prison or not sent to prison) is independent of the plea. If you were an attorney defending a guilty defendant, would these results suggest that you shouldencourage a guilty plea?E Click the icon to view the table.Determine the null and alternative hypotheses.Ho: The sentence (sent to prison or not sent to prison) is independent of the pleaH;: The sentence (sent to prison or not sent to prisonOB. H, Pleading guilty reduces a defendant's chance ofH;: Pleading guilty does not reduce a defendant's chMore InfoOC. Ho: The sentence (sent to prison or not sent to prisorH,: The sentence (sent to prison or not sent to prisoGuilty Plea426567Not Guilty PleaSent to PrisonNot Sent to Prison58OD. Ho Pleading guilty does not reduce a defendant's ch17H;: Pleading guilty reduces a defendant's chance ofDetermine the test statistic.= (Round to three decimal places as needed.)PrintDone

Solution:- Given data Guilty Plea Not guilty plea Total Sent to prison 426 58 484 Not sent…

Answered: Many people believe that criminals who…

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 researcher hypothesizes that personality type is related to heart disease. Type A people, who are competitive and impatient are more prone to heart diseases. Type B people, who are more relaxed, are less likely to have heart problems. The following data about personality type and heart disorder are from a random sample. No heart disease heart disease total Type A 32 18 50 Type B 128 22 150 total 160 40 Do these data support that there is a significant relationship between personality type and heart disease? Test at the .05 level of significance. Compute the phi-coefficient to measure the strength of the relationship.
A magazine subscriber study asked, "In the past 12 months, when traveling for business, what type of airline ticket did you purchase most often?" A second question asked if the type of airline ticket purchased most often was for domestic or international travel. Sample data obtained are shown in the following table. Type of Ticket First class Business class Economy class Type of Flight Domestic 29 97 516 International 22 123 133 (a) Using a 0.05 level of significance, is the type of ticket purchased independent of the type of flight? State the null and alternative hypotheses. Ho: The type of ticket purchased is mutually exclusive from the type of flight. H₂: The type of ticket purchased is not mutually exclusive from the type of flight. Ho: The type of ticket purchased is independent of the type of flight. Ha : The type of ticket purchased is not independent of the type of flight. Ho: The type of ticket purchased is not independent of the type of flight. Ha: The type of ticket…
Consider that in a retrospective cohort study involving job type and heart disease among railroad workers, the following data was obtained. Note that job type was used as a surrogate marker for physical activity. Clerks have a sedentary job whereas track workers have a physically demanding job. Heart Disease Job type yes no Clerk 50 500 Tracks worker 22 390 What is the measure of association
only parts D, E, & F
The table below summarizes data from a survey of a sample of women. Using a 0.01 significance level, and assuming that the sample sizes of 700 men and 300 women are predetermined, test the claim that the proportions of agree/disagree responses are the same for subjects interviewed by men and the subjects interviewed by women. Does it appear that the gender of the interviewer affected the responses of women? Gender of Interviewer Man Woman Women who agree 409 256 Women who disagree 291 44 Identify the null and the alternative hypothesis. Test statistics? Critical Value? P-Value? Conclusion? Reject or fail to reject? There is or isn't sufficient evidence?
You are designing a two-group true experiment examining the effects of pet ownership on a measure of happiness. You randomly sample 300 men and women and bring them into the laboratory to begin the study. You then use random assignment to conduct your experiment. A. Identify the independent variable and provide a description of how you will use experimental manipulation to create your two comparison groups (hint: remember this is a true experiment). B. Identify your dependent variable and provide an operational definition for how you will measure your that variable (without using a survey or a question asked of the participant)? C. After conducting your study, you find that your results are significant. How could you describe those results? State the conclusions (hint: remember this was a true experiment.)
4. A plumbing company is interested in whether the reasons for service calls tend to differ between weekdays and weekends. The following table summarizes a random sample of 400 service calls, giving both the reason why the call was made and whether or not it was the weekend; do the data provide evidence of an association between the two variables? Test at the 5% significance level.
A professor wants to know which type of instructional mode students had more satisfaction. The professor randomly selected n = 5 students from each of the following types of classes: online only, hybrid, and face-to face only. Student were given a satisfaction survey. Are their differences in student satisfaction among the different instructional modes. The data are below: Online Hybrid Face-to-Face 3 3 4 3 3 1 3 1 3 2 2 2 2 1 3 Which of the following is the appropriate statistical conclusion? According to the ANOVA, there was an overall significant difference among the three instructional modes. However, there was not a significant differcene between any two instructional modes using the Tukey's post hoc test. According to the ANOVA, there was an overall significant difference among the three instructional modes. There was were significant differcene between all two pairs of instructional modes using the Tukey's post hoc test. According…
Arsenic in Rice Listed below are amounts of arsenic in samples of brown rice from three different states. The amounts are in micrograms of arsenic and all samples have the same serving size. The data are from the Food and Drug Administration. Use a 0.01 significance level to test the claim that the three samples are from populations with the same median.
The table below summarizes data from a survey of a sample of women. Using a 0.01 significance level, and assuming that the sample sizes of 800 men and 300 women are predetermined, test the claim that the proportions of agree/disagree responses are the same for subjects interviewed by men and the subjects interviewed by women. Does it appear that the gender of the interviewer affected the responses of women? Gender of Interviewer Man Woman Women who agree Women who disagree 556 250 244 50 Click here to view the chi-square distribution table. Identify the null and alternative hypotheses. Choose the correct answer below. Ho: The proportions of agree/disagree responses are the same for the subjects interviewed by men and the subjects interviewed by women. : The proportions are different. Hi: O B. Ho: The proportions of agree/disagree responses are different for the subjects interviewed by men and the subjects interviewed by women. H1: : The proportions are the same. Ho: The response of the…
In a study, it is desired to test whether there is a correlation between the habit of doing sports and the income level at the 0.01 significance level. While the habit of doing sports is categorized as "existing" and "absent", the income level is categorized as "low", "medium" and "high". The collected observation results are shared in the table below. LOW MEDIUM HIGH TOTALYES 23 10 30 63NONE 11 16 34 61TOTAL 34 26 40 124Accordingly, what is the table value used when testing the claim?
Empathy: The Interpersonal Reactivity Index is a survey designed to assess four different types of empathy. One type of empathy, called Empathetic Concern, measures the tendency to feel sympathy and compassion for people who are less fortunate. The index ranges from 0 (less empathetic) to 28 (more empathetic). The following data, representing random samples of 12 males and 12 females, are consistent with results reported in psychological studies. Boxplots show that it is reasonable to assume that the populations are approximately normal. Can you conclude that the mean empathy score for men is less than the mean empathy score for women? Let H, denote the mean empathy score for men. Use the ɑ = 0.01 level and the P-value method with the TI-84 Plus calculator. Males 20 12 16 13 26 21 23 15 18 25 15 Females 22 20 26 25 28 24 16 19 20 23 21 23 Send data to Excel Submit Assianment State the null and alternate hypotheses. H: H The hypothesis test is a (Choose one) ▼ test.

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