Joan Nguyen recently claimed that the proportion of college-aged males with at least one pierced ear is as high as the proportion of college-aged females. She conducted a survey in her classes. Out of 112 males, 19 had at least one pierced ear. Out of 98 females, 46 had at leastone pierced ear. Do you believe that the proportion of males with at least one pierced ear is different from the proportion of females with atleast one pierced ear? (Use a = 0.05.)NOTE: If you are using a Student's t-distribution for the problem, including for paired data, you may assume that the underlying populationis normally distributed. (In general, you must first prove that assumption, though.)Part (a)Part (b)Part (c)Part (d)State the distribution to use for the test. (Round your answers to four decimal places.)Pm-P-? OPart (e)What is the test statistic? (If using the z distribution round your answer to two decimal places, and if using the distribution round your answer to threedecimal places.)70=Part (f)Part (9)Part (h)Part()

Followings are the Explanation of the question Let difference between the population proportion…

Answered: Joan Nguyen recently claimed that the…

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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In a sample of 47 men, 36 said that they had less leisure time today than they had 10 years ago. In a sample of 47 women, 30 women said that they had less leisure time today than they had 10 years ago. At a = 0.05, is there a difference in the proportions? Use p, for the proportion of men with less leisure time.
An article in the Archives of Internal Medicine reported that in a sample of 224 men, 73 had elevated total cholesterol levels (more than 200 milligrams per deciliter). In a sample of 232 women, 44 had elevated cholesterol levels. Can you conclude that the proportion of people with elevated cholesterol levels differs betwen men and women? Use the a= 0.05 level.
Rafael has scored 81, 77, 60, 71, and 90 on his previous five tests. What score does he need on his next test so that his average (mean) is 79? X S
I need help with this problem I want to learn about. A recent year was randomly picked from 1985 to the present. In that year, there were 2,052 Hispanic students at a public university out of a total of 12,328 students. At a community college, there were 324 Hispanic students out of a total of 2,441 students. In general, do you think that the percent of Hispanic students at the two colleges is basically the same or different? (Use ? = 0.05. For subscripts let 1 = the public university, and 2 = the community college.) how do i understand this question?
The average salary of male employees in a firm was $520 and that of females was $420. The mean salary of all the employees was 500. Find the percentage of male and female employees.
The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that 77% of all fatally injured automobile drivers were intoxicated. A random sample of 26 records of automobile driver fatalities in Kit Carson County, Colorado, showed that 14 involved an intoxicated driver. Do these data indicate that the population proportion of driver fatalities related to alcohol is less than 77% in Kit Carson County? Use ? = 0.01. Solve the problem using both the traditional method and the P-value method. Since the sampling distribution of p̂ is the normal distribution, you can use critical values from the standard normal distribution as shown in the table of critical values of the z distribution. (Round the test statistic and the critical value to two decimal places. Round the P-value to four decimal places.) test statistic = critical value = P-value =
The accompanying table shows the height and weight of five football players in training camp. The body mass index (BMI) is used to assess the relative amount of fat in a person's body. If w is weight in pounds and h is height in inches, then BMI = 703wh. Some physicians consider your body fat abnormal if your BMI satisfies BMI-23>3. Which of the five players does not have abnormal body fat? does not have abnormal body fat. Player D Player B Player C Player E Player A .. Player A B C E Ht. 6-8 5-8 5-10 5-9 6-6 Wt. 359 240 227 164 342
Joselyn hopes to receive a grade of B or better in her statistics class. Currently she has scored 75, 83, and 81 on her three in-class tests and also has a homework average of 88. Her professor calculates the class grade by finding the mean of five grades: three in-class tests, the homework average and the final exam. What is the minimum score Joselyn must earn on the final exam to have a class grade (mean) of 80? A. 67 B. 95 C. 70 D. 73
The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is 3131 hours and the median is 27.227.2 hours. Twenty-four of the families in the sample turned on the television for 1616 hours or less for the week. The 7th percentile of the data is 1616 hours. What is the value of the 50th percentile?
Last semester, Bonnie took a different Biology teacher than her friend Tony. After the final exam, they compared test scores. Bonnie earned an 83 (mean = 75.6, sd = 5), and Tony earned an 87 (mean = 80.3, sd = 7). Who did better? Why?
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