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- Law School According to the Law School AdmissionCouncil, in the fall of 2007, 66% of law school applicants were accepted to some law school.4 The training programLSATisfaction claims that 163 of the 240 students trainedin 2006 were admitted to law school. You can safely consider these trainees to be representative of the popula-tion of law school applicants. Has LSATisfaction demon-strated a real improvement over the national average? a) What are the hypotheses?b) Check the conditions and find the P-value.c) Would you recommend this program based on whatyou see here? Explain.What is the research hypothesis? a) The stress task will not lead to an increase in stress hormones. OR b) The stress task will lead to an increase in stress hormones.2. A researcher wants to measure the job satisfaction levels of the employees of two fast food company located in Manila. The researcher has used a questionnaire consisting of ten questions related to job satisfaction levels of the employees. The researcher has used a rating scale from 1 to 4 where 1 is the lowest score and 4 is the highest score. So, a maximum score of 40 and a minimum score of 10 can be obtained. The researcher has randomly selected 15 employees from the first company and 17 employees from the second company. The scores obtained from these employees are given below: First Company: 32 40 31 33 32 30 30 32 31 32 34 32 38 32 28 Second Company: 25 28 23 27 24 26 27 22 25 26 34 25 23 22 29 27 24 Taking 5% as the alpha level, examine the significant difference in terms of job satisfaction level between the employees of the two companies.
- Supposed a firm conducted a survey of workers involving the variable ‘’skill’’ and ‘educational level’. The survey revealed that 50% of the workers are elementary school graduate (E), 40% are secondary school Graduates (S) and 10% are college and above Graduates (C). If on the basis of skill, the survey revealed that 10% of Elementary school Graduate are unskilled, 5% of secondary school Graduate are unskilled, and 2% of college and above Graduates are unskilled. Suppose a worker is selected randomly and is found to be unskilled. What is the probability that the worker is a College Graduate?An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d = (verbal SAT scores prior to taking the prep course)-(verbal SAT scores after taking the prep course). Use a significance level of α = 0.05 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course. Student 1 2 3 4 567 Score on first SAT 380 440 470 490 440 Score on second SAT 420 530 530 550 460 420 410 490 430 Step 1 of 5: State the null and alternative hypotheses for the test. Answer 0 Ho: Md 0 Ha IVA A VI Copy Data Tables Keypad Keyboard ShortcutsThe following table is based on information from the U.S. Census Bureau regarding the type of health insurance coverage of people by age in the year 2006: Health Insurance Coverage Age <18 (A) 18-44 (B) 45-64 (C) >64 (D) Private (P) 353 545 382 185 Government (G) 202 115 105 315 None (N) 85 260 109 35 Find P(C or A)
- The Bureau of Labor Statistics provides the following data about U.S. workers ages 16 and older who were paid hourly rates in 2021. The table shows, overall and separately for men and women, the number of workers (in thousands, so that the upper left value of 76,125 represents over 76 million individuals) who were paid hourly that year and the number who earned the federal minimum wage or less. Characteristic Total, 16 years and older Men, 16 years and older Women, 16 years and older Number of workers (in thousands) Total paid hourly rates 76,125 38,089 38,036 At or below minimum wage 1,091 398 693 Express the value "693 thousands" in the table (lower right cell) as a sentence in context. There are 693 women 16 years and older who earned the federal minimu, wage or less. Fill in the blanks with the appropriate supporting evidence computed from the data table. Give all numerical answers as a number between 0 and 1, rounded to 3 decimal places (for ex., 0.111, no text). A U.S. worker…The following table is based on information from the U.S. Census Bureau regarding the type of health insurance coverage of people by age in the year 2006: Health Insurance Coverage Age <18 (A) 18-44 (B) 45-64 (C) >64 (D) Private (P) 365 545 390 185 Government (G) 210 109 105 315 None (N) 85 260 100 35 Find P(B)An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d = (verbal SAT scores prior to taking the prep course)-(verbal SAT scores after taking the prep course). Use a significance level of a = 0.01 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course. 1 234567 520 570 540 380 370 490 450 Student Score on first SAT Score on second SAT 540 600 610 470 410 510 480 Step 1 of 5: State the null and alternative hypotheses for the test. Answer 0 Ho: Md 0 Ha Ma IA IV V A || < = Copy Data Tables Keypad Keyboard Shortcuts
- 5. Should cell phone use be banned by drivers? 188 people took part in a survey. The answers are classified by the gender of the respondent as below: Agree Disagree Female 68 37 Male 26 46 What is the conditional proportion of females who agree? (a) 0.60 (b) 0,55 (c) 0.45 (d) 0,65 (e) 0.72 6. Refer to the information given in Question 5. What is the marginal proportion of people who agree? (a) 0.72 (b) 0.55 (c) 0.60 (d) 0.45 (e) 0.65 7. Refer to the information given in Question 5. Is there an association between gender and the response given on the survey? (a) Yes, because the proportion of females who agree is higher than the proportion of males who agree. (b) Association here has nothing to do with what proportions of males and females agree. (c) No, because the proportions of females and males who agree are very similar. (d) We need to look at a scatterplot to judge association. (e) Yes, because the…A1Management of a company that produces a medical device has carefully selected and screened 220 finished items (packaged, ready to ship). The team agrees that the sample contains 33 defective items, all for various visual defects on the package such as crooked labels, poor seal, errant marks on package, etc. The items are then given to an inspector for classification into “defective” and “non-defective” piles. The inspector ends up rejecting 9 non-defective items, and accepting 11 defective items. The inspector classifies the remaining items in the sample correctly. Find the following (answer as a probability, NOT a percentage. Use 3 decimal places. Notice that alpha = 9/187, Beta = 11/33, and p = 33/220. P(inspector accepts the item and its actually non-defective) =