10.7 only om/products/adec55de-25be-4331-9403-abf9e2add3f5/pages/a0b0a3eaff1fe01e3e012f9a53bfd689c4d3208d7?location=%7B"id"%3A"...10.710.810: Associations between Categorical VariablesStudent Loans-California According to a 2017 report, 53% of college graduates inCalifornia had student loans. Suppose a random sample of 120 college graduates inCalifornia shows that 72 had college loans.(Source: Lendedu.com)a. What is the observed frequency of college graduates in the sample who hadstudent loans?b. What is the observed proportion of college graduates in the sample who hadstudent loans?c. What is the expected number of college graduates in the sample to have studentloans if 53% is the correct rate? Do not round off.Student Loans-Illinois According to a 2017 report, 64% of college graduate in Illinoishad student loans. Suppose a random sample of 80 college graduates in Illinois isselected and 48 of them had student loans.(Source: Lendedu.com)a. What is the observed frequency of college graduates in the sample who hadstudent loans?542

Given info: 53% of college graduates in California had student loans. Out of 120 samples, 72 had…

Answered: 10.7 Student Loans-California According…

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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Suppose researchers do an epidemiologic investigation of people entering a sexually transmitted disease clinic. They find that 160 of 200 patients who are diagnosed as having gonorrhea and 50 of 105 patients who are diagnosed as having nongonococcal urethritis have had previous episodes of urethritis. 10.13 Are the present diagnosis and prior episodes ofurethritis associated?
4. A pharmaceutical company wants to test whether the incidence of side effects (i.e. adverse events)differs between the treatment and placebo groups at theα= 0.05. Letp1= the proportion of subjects in the treatment groups who experienced at least one adverse event and letp2= the proportion of subjects in the placebo group who experience at least one adverse event. 8 out of 30 people in the treatment group experienced at least one adverse event and 5 out of 30 people in the placebo group experienced at least one adverse event. (a) Set up the null and alternative hypothesis (using mathematical notation/numbers AND interpret them in the context of the problem) (b) Calculate the test statistic (c) Calculate the critical value (d) Draw a picture of the distribution of the test statistic under H0. Label and provide values for the critical value and the test statistic, and shade the critical region. (e) Make and justify a statistical decision at theα= 0.05 level and state your conclusions in…
2. A researcher suspects that the actual prevalence of generalized anxiety among children and adolescents is higher than the previously reported prevalence of generalized anxiety disorder among children and adolescents. The previously reported prevalence of generalized anxiety disorder among children and adolescents is 3.9%, and the researcher conducts a study to test the accuracy of the previously reported prevalence of generalized anxiety disorder by recruiting 98 children and adolescents from various pediatricians’ offices and tests them for generalized anxiety disorder using the DSM-5. The researcher determines that the prevalence of generalized anxiety disorder among the participants of the study is 6.1%. Calculate the z value for the test statistic.A) z = 1.12B) z = 1.09C) z = 0.92D) z = -57.53
Describe some of the problems that can arise when the participants in one treatment condition of a between-subjects experiment are allowed to communicate with participants in a different condition.
In 1982 John Hinckley was on trial, accused of having attempted to kill the then US President Ronald Reagan. Hinckley was found not guilty by reason of insanity. The defense psychiatric reports found him to be insane while the prosecution reports declared him legally sane. In particular, the defense sought to establish that brain scan results like John Hinckley's appeared in a higher percentage of schizophrenics than of normal people his age.During Hinckleys trial, an expert witness, Dr. Weinberger, told the court that when individuals suffering from schizophrenia were given computerized axial tomography (CAT) scans, the scans showed brain atrophy in 30% of cases compared with only 2% of scans done on normal people. Health records show that 1.5% of the people in the United States suffer from schizophrenia. Hinckleys CAT scan showed brain atrophy.Calculate the probability that Hinckley suffered from schizophrenia given his CAT scan showed brain atrophy.Do all calculations to 5 decimal…
4. A researcher suspects that the actual prevalence of generalized anxiety among children and adolescents is higher than the previously reported prevalence of generalized anxiety disorder among children and adolescents. The previously reported prevalence of generalized anxiety disorder among children and adolescents is 3.9%, and the researcher conducts a study to test the accuracy of the previously reported prevalence of generalized anxiety disorder by recruiting 98 children and adolescents from various pediatricians’ offices and tests them for generalized anxiety disorder using the DSM-5. The researcher determines that the prevalence of generalized anxiety disorder among the participants of the study is 6.1%. What should the researcher’s conclusion be for a 5% significance level?A) We reject H0 at the 5% level because -57.53 is less than -1.96. We do have statistically significant evidence to show the actual prevalence of generalized anxiety disorder among children and adolescents is…
The Consumers Risk (B) is defined as a Type II error and occurs when we accept the Null Hypothesis (Ho), when in fact it is false, i.e., we accept bad articles. True or False Plzz explain.
Assuming that a study on risk management practices is to be conducted among 4,488 entrepreneurs wherein 2,244 are college graduates, 1,346 are high school graduates and the remaining 898 are elementary graduatesFurthermore 1,795 of them are into food business, 1,571 are into merchandising or trading business and the others 1,122 are into services business. REQUIRED: Please make a close ended question to be put in the questionnaire about the variables above.
3. A researcher suspects that the actual prevalence of generalized anxiety among children and adolescents is higher than the previously reported prevalence of generalized anxiety disorder among children and adolescents. The previously reported prevalence of generalized anxiety disorder among children and adolescents is 3.9%, and the researcher conducts a study to test the accuracy of the previously reported prevalence of generalized anxiety disorder by recruiting 98 children and adolescents from various pediatricians’ offices and tests them for generalized anxiety disorder using the DSM-5. The researcher determines that the prevalence of generalized anxiety disorder among the participants of the study is 6.1%. For a level of significance of 5%, what should the researcher’s decision rule look like?A) Reject H0 if z is less than or equal to -1.645.B) Reject H0 if z is greater than or equal to 1.645.C) Reject H0 if z is less than or equal to -1.96.D) Reject H0 if z is greater than or…
Mr. Juan Rafael, the manager of JJ Computer Tech is conducting a study on the number of customers who pay by personal check, by credit card and by debit card. During the course of five days, he records the following number of purchases made by each method. What should be the conclusion as a result of the analysis? A. The number of customers who pay by personal check, by credit card, and by debit card at JJ Computer Tech are the same.B. At least two of the methods of payment in purchasing at JJ Computer Tech are significantly different.C. There is a significant difference in the number of customers who pay by personal check, by credit card, and by debit card at JJ Computer Tech.D. There is no significant difference in the number of customers who pay by personal check, by credit card, and by debit card at JJ Computer Tech
In a winter flu epidemic, a well-known pharmaceutical company studied 2,000 infants to determine whether the company's new drug was effective after two days.babies to determine if the company's new drug was effective after two days.Among 120 babies who had the flu and were given the drug, 29 were cured within two days.two days. Among 280 babies who had flu but did not receive the drug, 56 were cured within two days.Is there any significant indication to support the company's claim of the drug's effectiveness? of the drug's effectiveness? Note:The exercise in the image is the original, it is in Spanish (to better understand) , but it is easy to understand
Random assignment helps to strengthen causal inferences within an experiment by ruling out potential confounding variables otherwise introduced to an experiment due to individual differences in participants. True False

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