1. Laurent Bleu Medical Clinic has provide affordable price of the Covid-19 antigen rapidtest kit (RTK-Ag) to the clients as part of its corporate sodial responsbility initiative. It isbelieve that the price of the Covid-19 antigen rapid test kit (RTK-Ag) has slightly skewedto the right with a mean of RM120 and a standard deviation of RM20.a Calculate the mean and standard deviation of the sampling distribution of the priceof the Covid-19 antigen rapid test kit (RTK-Ag) for a sample of 25 clients. Describethe shape of its sampling distribution.b Calculate the mean and standard deviation of the sampling distribution of the priceof the Covid-19 antigen rapid test kit (RTK-Ag) for a sample of 100 clients Describethe shape of its sampling distribution

Given information: Population mean is 120 Population standard deviation is 20. a) Mean of sampling…

Answered: 1. Laurent Bleu Medical Clinic has…

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 new computer chip design(A) is being compared to the current design(B).Fifty independent chips of each design are tested for speed at performing a certain task. The new computer chip (A) performed the task in 481.2 ms, on average, with a sample standard deviation of 14.3 ms. The current computer chip (B) performed the task in 495.6 ms, on average, with a sample standard deviation of 16.4 ms. Can you conclude, at a 5% significance level, that chip A performs this task faster than chip B?
A union of restaurant and foodservice workers would like to estimate the mean hourly wage, , of foodservice workers in the U.S. The union will choose a random sample of wages and then estimate j using the mean of the sample. What is the minimum sample size needed in order for the union to be 99% confdent that its estimate is within $0.40 of u? Suppose that the standard deviation of wages of foodservice workers in the U.S. is about $2.10. Carry your intermediate computations to at least three decimal places. Write your answer as a whole nuhber (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.)
A student at a four-year college claims that mean enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges surveyed, the mean enrollment was 6,192 with a standard deviation of 699. Of the 35 two-year colleges surveyed, the mean enrollment was 4,354 with a standard deviation of 781. Test the student's claim at the 0.1 significance level. Determine the test statistic. Round to four decimal places.t=_________ Find the pp-value. Round to 4 decimals.p-value = _________
The Weschler Intelligence Scale for Children (WISC) is an intelligence test designed for children between the ages of 6 and 16. The test is standardized so that the mean score for all children is 100 and the standard deviation is 15. Suppose that the administrators of a very large and competitive school district wish to estimate the mean WISC score for all students enrolled in their programs for gifted and talented children. They obtained a random sample of 40 students currently enrolled in at least one program for gifted and talented children. The test scores for this sample are as follows: 117,142,112,99,107,109,109,121,121,125,116,123,110,105,110,111,95,128,103,106, 155,98,100,123,107,137,115,127,102,106,121,113,109,128,103,105,130,134,112,102 Click to download the data in your preferred format. CrunchIt! CSV Excel JMP Mac Text Minitab PC Text R SPSS TI Calc Use this data to calculate the mean WISC score, x¯, for these 40 students. Next, compute the…
A sports writer wants to see if a football filled with helium travels farther, on average, than a football filled with air. 12 footballs were filled with helium to the recommend pressure and 15 footballs were filled with air to the recommended pressure. The mean yardage for the helium filled footballs was 267 yards with a standard deviation of 3 yards. The mean yardage for the air filled footballs was 241 yards with a standard deviation of 5 yards. Assume the populations are normal with equal variances. (a). Construct a 99% confidence interval for the mean difference in in yardage for the two types of footballs Lower bound (use 3 decimal places) Upper bound (use 3 decimal places) (b). What can you conclude about the sports writer's idea that helium footballs travel farther, on average? The helium footballs are no different than the other footballs, on average The other footballs travel farther on average than the helium footballs The helium footballs travel farther on average than the…
Researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic illness established two independent test groups. The first group consisted of 15 people with the illness, and the second group consisted of 11 people with the illness. The first group received treatment 1 and had a mean time until remission of 187 days with a standard deviation of 6 days. The second group received treatment 2 and had a mean time until remission of 162 days with a standard deviation of 8 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Construct a 90% confidence interval for the difference H₁-H₂ between the mean number of days before remission after treatment 1 (H₁) and the mean number of days before remission after treatment 2 (H₂). Then find the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three…
An educational consulting group claims that there is a difference in the mean student loan debt of students who attended private four-year colleges and the mean student loan debt of students who attended out-of-state public four-year colleges. Student loan debt of 10 randomly selected students who attended private four-year colleges and 10 randomly selected students who attended out-of-state public four-year colleges, at the time of graduating college, are recorded. Assume that the population standard deviation of student loan debt is $5,000 for both the private college attendees and the public college attendees, and assume that the distribution of student loan debt is normally distributed for both the private college attendees and the public college attendees. Let the students who attended private four-year colleges be the first sample, and let the students who attended out-of-state public four-year colleges be the second sample. The group conducts a two-mean hypothesis test at the…
Suppose two food preservatives are extensively tested and determined safe for use in meats. A processor wants to compare the preservatives for their effects on retarding spoilage. Suppose 16 cuts of fresh meat are treated with preservative A with mean 95.25 and Sample standard deviation 13.45. And another 12 cuts of meat are treated with preservative B with mean 100.50 and standard deviation 10.55. The number of hours until spoilage begins is recorded for each of the 28 cuts of meat. The value of the test statistic for determining if there is a difference in the population variances for preservatives A and B is equal to: A. 1.129. OB. 1.275. OC. 1.625. OD. 0.784.
Please answer the last three parts of this question.
In a study to evaluate the performance of students in an engineering examination, 15 students were randomlyselected for study. It was found out that their mean score was 58.75%. From past records, the mean scoreof students in the same examination is 61.75% with a standard deviation of 3.75%. The departments policystipulates that any mean score less than 61.75% is unacceptable. Formulate the hypothesis and test thenull hypothesis at 1% level of significance. What is your conclusion?
Compute the variance and standard deviation of the set of test scores(population):{39, 10, 24, 16, 19, 26, 29, 30, 5}.

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