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a)Two sampleztest for meansb)Two sampleztest for proportionsc)One samplettest for meansd)One sampleztest for meanse)Matched pairsttest for meansf)One sampleztest for proportionsg)Two samplettest for meansQuestion 7Your answer is CORRECT.A random sample of 144 cans of fruit nectar is drawn from among all cans produced in a run. Priorexperience has shown that the distribution of the contents has a mean of 13.22 ounces and a standarddeviation of 2.16 ounce. What is the probability that the average contents of the 144 sample cans is less than13.00 ounces?a)0.222b)0.778c)0.277d)0.889e)0.111Question 8Your answer is CORRECT.A random variableXhas a probability distribution as follows:Loading [MathJax]/extensions/MathZoom.js
12/9/2016Print Test4/9X01234P(X)3k2k2k2k2kWhat is P(X < 2)?a)b)c)d)e)Cannot be determined.Question 9Your answer is CORRECT.Find a value ofso that.a)b)c)d)e)Question 10Your answer is CORRECT.The following table displays the results of a sample of 100 in which the subjects indicated their favorite icecream of three listed. The data are organized by favorite ice cream and age group. What is the probabilitythat a person chosen at random will be under 20 years old if he or she favors chocolate?AgeChocolateVanillaStrawberryOver 4012810204015812Under 2011168a)111511711911cP(Z≤c) = 0.761.2450.509−1.031−0.8670.7061138Loading [MathJax]/extensions/MathZoom.js
12/9/2016Print Test5/9b)c)d)e)Question 11Your answer is CORRECT.A random sample of 121 observations produced a sample proportion of 0.35. An approximate 90%confidence interval for the population proportionpis betweena)0.262 and 0.438b)0.307 and 0.393c)0.279 and 0.435d)0.265 and 0.435e)0.279 and 0.421Question 12Your answer is CORRECT.Data for gas mileage (in mpg) for different vehicles was entered into a software package and part of theANOVA table is shown below:SourceDFSSMSVehicle6408204.00Error732746.71Total13735Determine the pvalue for the data.a)0.0124b)0.0186c)0.0373d)0.0437891001110011302738Loading [MathJax]/extensions/MathZoom.js
12/9/2016Print Test6/9e)0.4833Question 13Your answer is CORRECT.If thePvalue is larger than the level of significance α, then the researcher should __________ at level α.a)Fail to reject H0b)Accept H0c)Reject H0Question 14Your answer is CORRECT.The onesample t statistic for a test ofH0: μ = 12 vs.Ha: μ < 12 based onn= 19 observations has the teststatistic value oft= −1.65. What is thepvalue for this test?