To find the 35th percentile, P35, we will identify the value at location sorted list above.
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- give details on all the steps necessary to perform a test of hypothesis.A university advertises that 90% of the graduates from their school of science find a job within one year. Researchers want to see if this is really the case and they survey 60 graduates from this university at the end of the first year after graduation and find out that 50 of them were employed.For α=0.10, is there enough evidence to conclude that the one-year employment proportion of this university is different from the advertised 90%?Wages of workers Without a High School Diploma. SmartAsset reports that the average weekly earnings for workers who have not received a high school diploma are $493 in 2018. Suppose you would like to determine if the average weekly earnings for workers who have received a high school diploma is significantly greater than the average Supplementary Exercises 465 weekly earnings for workers who have not received a high school diploma. Data providing the weekly pay for a sample of 50 workers who have received a high school diploma are available in the file WeeklyHSGradPay. These data are consistent with the findings reported by SmartAsset. a. Repeat the hypothesis test using the critical value approach. b. e) Calculate the probability of a type II error when the mean weekly pay for workers who have received a high school diploma is $900. Weekly Earnings 687.73 543.15 789.45 442.26 684.85 661.43 478.30 629.62 486.95 786.47 652.15 652.82 669.81 641.13…Wages of workers Without a High School Diploma. SmartAsset reports that the average weekly earnings for workers who have not received a high school diploma are $493 in 2018. Suppose you would like to determine if the average weekly earnings for workers who have received a high school diploma is significantly greater than the average Supplementary Exercises 465 weekly earnings for workers who have not received a high school diploma. Data providing the weekly pay for a sample of 50 workers who have received a high school diploma are available in the file WeeklyHSGradPay. These data are consistent with the findings reported by SmartAsset. State the hypotheses that should be used to test whether the mean weekly pay for workers who have received a high school diploma is significantly greater than the mean weekly pay for workers who have not received a high school diploma. Use the data in the file WeeklyHSGradPay to compute the sample mean, the test statistic, and the p-value. Use a =…
- A standardized exam’s score are normally distributed. In a recent year, the mean test score was 1477 and the standard was 315. The test scores of four students selected at random 1860 1230, 2160, and 1360. Find the Z- score that correspond to each value and determine wether any of the values are unusual. The Z-score for 1860 is-The Z-score for 1230 is-The Z-score for 2160 is-The Z-score for 1360is-Use test concerning proportions: *A registrar claims that 45% of their students change their major after their 2nd yr due to retention policy. A random sample of 125 revealed that 50 students had changed their major after their 2nd Is there a decrease in the proportion of students who changed their major after their 2nd yr, test at 0.02 level of significance.Select all that apply Reject the null hypothesis. Fail to reject the null hypothesis. There is insufficient evidence at the α=0.10 level of significance to conclude that the population mean flight distance of the Lightning is different than the population mean flight distance of the Thunder. There is sufficient evidence at the α=0.10 level of significance to conclude that the population mean flight distance of the Lightning is different than the population mean flight distance of the Thunder.
- A police department is implementing a new style of patrol in order to reduce property crime. They measured the number of property crimes in 15 patrol beats in the month before the new patrol style was put in place. After the department had been patrolling for 3 months, the number or property crimes in those 15 beats was measured again over the course of the fourth month. What kind of design is this? independent-measures repeated-measures cannot be determinedSimple random sampling uses a sample of size n from a populaiton of size N to obtain data that can be used to make inferences about the characteristics of a population. Suppose that, from a population of 50 bank accounts, we want to take a random sample of four accounts in order to learn about the population. how many different random samples of four accounts are possible? Show steps in ExcelA health officer is trying to study the malaria situation of Zambia. From the records of seasonal blood survey (SBS) results he came to understand that the proportion of people having malaria in Zambia was 3.8% in 2015. The size of the sample considered was 15,000. He also realized that during the year that followed (2016), blood samples were taken from 10,000 randomly selected persons. The result of the 2016 seasonal blood survey showed that 200 persons were positive for malaria. Help the Health officer in testing the hypothesis that the malaria situation of 2016 did not show any significant difference from that of 2015 (take the 5% level of significance).
- Program Per-Year Tuition ($) / Mean Starting Salary Upon Graduation ($)65,028 153,10868,882 152,64766,427 145,53568,299 141,71665,493 138,89966,663 155,51465,232 149,25368,670 150,84163,973 133,81961,996 145,81867,714 146,80761,139 147,07660,836 141,65357,270 140,26255,157 122,91654,127 116,71355,480 126,08652,808 127,11753,414 129,22949,587 122,17045,738 111,27746,552 111,11949,982 110,67345,091 108,29238,565 77,95948,642 82,78947,604 101,57249,252 78,46939,510 87,78632,884 74,47344,782 75,43442,554 54,54750,301 64,97835,013 101,61823,004 55,03040,819 80,37137,604 53,428A researcher is interested in studying how the number of books parents read to their children can influence a child's reading skills in kindergarten. She randomly assigns families with 5 year old children to either read their child 3 books per day, 2 book per day, or 1 book per day for the first 2 months of kindergarten. They then measure the children's reading ability. How could the confound be fixed for this scenario? Be sure to tell me what technique you are using (constancy, repeated measures, randomization, elimination, or balancing), as well as how you would apply that technique to this specific scenario, and how that would fix this confound.Use test concerning Proportions: A medical doctor claims that 40% of the patients utilize health insurance, but a social worker thinks that this proportion may be is too high. In a sample of 100 medical bills, 25 were partially covered by health insurance, what can we conclude at 0.02 level of significance. A registrar claims that 45% of their students change their major after their 2nd yr due to retention policy. A random sample of 125 revealed that 50 students had changed their major after their 2nd Is there a decrease in the proportion of students who changed their major after their 2nd yr, test at 0.02 level of significance. A barangay captain claims that at least 85% of the residents in his barangay have household pets. To test this claim a researcher randomly selected a sample of 550 residents and find that 495 of them do have pets. What can you conclude at 0.10 level of significance. Test at 0.01 whether the performance in the training program and success in the job are…