A man surveyed a sample of 36 high school students and asked, "How many days in the past week have you cons umed an alcoholic bcveragu? Tre results of the survey are shownto the right. Use these results to answer parts (a) through (f).1115111112232(a) Is this data discrete or continuous?DiscreteContinuous(b) Oraw a histogram of thhe data and descrine its shape. Choose the histog'Am below tha orrectiy depicts The givei da.aOD.B.OA.20-1520-15-10-15-10-012345Num of dnnks012 145Numter of Dne012345Nmbecaf DrinkNumber of DnnksNextStatcrunchO 90 7:24

Given : A man surveyed a sample of 36 High school students and asked, “How many days in the past…

Answered: A man surveyed a sample of 36 high…

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 local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the pro-shop consistently strings rackets at lower tensions, on average, than requested. To support this claim, the customer asked the pro shop to string 10 new rackets at 42 psi. Suppose the two-tailed P-value for the test described above (obtained from a computer printout) is 0.08. Give the proper conclusion for the test. Use α = 0.05. Group of answer choices Reject H0 and conclude that μ, the true mean tension of the rackets, equals 42 psi. There is sufficient evidence to conclude that μ, the true mean tension of the rackets, is less than 42 psi Accept H0 and conclude that μ, the true mean tension of the rackets, equals 42 psi. There is insufficient evidence to conclude that μ, the true mean tension of the rackets, is less than 42 psi.
Use SPSS to run the analysis described in Question 6. What is the obtained t-statistic? Enter the value with three decimal places. If it is negative, be sure to include the sign.
A. what is the critical t-stat? Remember to use alpha = 0.05 two-tailed. B. so, is there a difference between how much the dogs will bark for these two different artists? Group of answer choices No, p <.05 yes, p >.05 No, p > 0.05 yes, p <.05 c. Finally, construct an 80% interval around the mean difference. What is the lower bound of that interval? D. What is the upper bound of that interval?
A local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the pro-shop consistently strings rackets at lower tensions, on average, than requested. To support this claim, the customer asked the pro shop to string 6 new rackets at 68 psi. Suppose the two-tailed P-value for the test described above (obtained from a computer printout) is 0.07 Give the proper conclusion for the test. Use 0.05 as level of significance
A sample of 56 research cotton samples resulted in asample average percentage elongation of 8.17 and asample standard deviation of 1.42 (“An ApparentRelation Between the Spiral Angle f, the PercentElongation E1, and the Dimensions of the CottonFiber,” Textile Research J., 1978: 407–410). Calculatea 95% large-sample CI for the true average percentageelongation m. What assumptions are you making aboutthe distribution of percentage elongation?
A law enforcement organization claims that their radargun is accurate to within 0.5 miles per hour for a courthearing. An independent organization hired to test theaccuracy of the radar gun conducted 12 tests on a projectilemoving at 60 miles per hour. Given the data inthe following table, determine if the radar gun can beused in court. State the hypothesis and base your commentson an appropriate α level.
A manufacturer of computer stands made a batch of 40,000bases. 500 bases were taken to make a measurement of the width of thebase obtaining the following results.-Average: 20.10 cmStd Deviation: 1cmIf the customer's width specification of this base is: from 17.1 cm to22.5cm.For the batch of 40,000 bases,a) How many bases does the lot have below the maximum width?(including those that could be below the lower limit)b) What is the CPK of this process?
4. A local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the pro-shop consistently strings rackets at lower tensions, on average, than requested. To support this claim, the customer asked the pro shop to string 6 new rackets at 68 psi. Suppose the two-tailed P-value for the test described above (obtained from a computer printout) is 0.07. Find the conclusion for the test at the 5% significance level.
A local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the pro-shop consistently strings rackets at lower tensions, on average, than requested. To support this claim, the customer asked the pro shop to string 6 new rackets at 68 psi. Suppose the two-tailed P-value for the test described above (obtained from a computer printout) is 0.07 Give the proper conclusion for the test. Use a= 0.05
A taxi company manager is trying to decide whether the use of radial tires instead of regular belted tires improves fuel economy. Twelve cars were equipped with radial tires and driven over a prescribed test course. Without changing drivers, the same cars were then equipped with regular belted tires and driven once again over the test course. The gasoline consumption, in kilometers per liter, was recorded as follows: (image attached) Can we conclude that cars equipped with radial tires give better fuel economy than those equipped with belted tires? Assume the populations to be normally distributed. Use both p-value and critical value approach.
A local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the pro-shop consistently strings rackets at lower tensions, on average, than requested. to support this claim, the customer asked the pro shop to string 6 new rackets at 68 psi. Suppose the two-tailed p-value for the test described above (obtained from a computer printout) is 0.07. Give the proper conclusion for the test. Use α = 0.05. a) There is sufficient evidence to conclude that μ, the true mean tension of the rackets, is less than 68 psi. b) There is insufficient evidence to conclude that μ, the true mean tension of the rackets, is less than 68 psi. c) Accept H0 and conclude that μ, the true mean tension of the rackets, equals 68 psi. d) Reject H0 and conclude that μ, the true mean tension of the rackets, equals 68 psi.
A pharmcuticle company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of Mercury) for 9 patients before taking the new drug and 2 hours after taking the drug are shown in the table below. is there enough evidence support the company's claim? Let D =(blood pressure before taking new drug)- (blood pressure after taking new drug).use significant levels of a=their 0.05 for the test. Assume that the systolic blood pressure levels are normally distributed for the population of patience both Before & After taking the new drug. 1.State the null and alternative hypothesis for the test. 2. Find the value of the standard deviation of the paired differences. Round to one decimal place. 3.compute the value of the test statistic. Round to three decimal places 4.determine the decision rule for rejecting the null hypothesis Ho. Round the numerical portion to three decimals. 5.make decision for the hypothesis test.

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