Statistics question and answers for August 08, 2023
- Q The F(df1,df2) distribution is negatively skewed. Group ofanswer choices True False
- Q Consider the game in normal form given in the followingtable.Player 1 is the “row†player with strategiesA,BandCandplayer 2 isthe “column†player with strategiesL,CandR. The gameis given in thefollowing table:LCRA0,02,-2-2,3B-2,20,02,-1C3,1-1,20,1(a) Find...
- Q 1). Which of the following statements about the hypothesistesting process is incorrect?A. The researcher decides on the level of significance afteranalyzing the output from the statistical test.B. A decision rule...
- Q Index1234567Temperature (F)72717875817768Pair of Gloves37373236333539Taking temperature as an independent variable and pairs ofgloves produced as a dependent variable, compute the least square’sregression line.
- Q Consider the following hypothesis test.H0: μ ≥ 40Ha: μ < 40A sample of 36 is used. Identify the p-value and stateyour conclusion for each of the following sample results. Useα...
- Q Are births really evenly distributed across the days ofa week? Here are data on 700 births in a hospital:DaySun.Mon.Tue.Wed.Thu.Fri.Sat.Observed births891101161049410681<Step 1>Null hypothesis: the births are evenly distributedacross the days of...
- Q show your work pleaseGiven the following data, answer the following questions:(Assume the second column to be the dependent variable)a) Construct the scatter diagram.b) Compute the linear correlation coefficient r and...
- Q The mean annual salary offer for a student graduating with adegree in accounting (in 2010) was $48,722.Suppose that a randomly selected sample of 20 accounting graduatesshows an average salary offer...
- Q Show your work pleaseA random sample of 20 aluminum cola cans is selected and theaxial loads are measured and the variance is 345.96 lb. Use a 0.05significance level to test...
- Q Two fair dice are tossed together. Let X be the sum and Y theproduct of the two numbers on the top of the dice. Calculate E(X+3Y).
- Q Show your work pleaseBelow are the results of a study. Through the sample of thefirst 49 Super Bowls,28 of them were won by teams in the National Football Conference(NFC).A 0.1%...
- Q -A consumer organization inspecting new cars found that many hadappearance defects​ (dents, scratches, paint​ chips, etc.). Whilenone had more than three of these​defects,6​% had​ three, 12% had​ two, and 26%...
- Q A group of 9 friends includes 4 Americans, 2 Canadians, and 3Italians. Three friends are to be selected at random for a trip.Let X denote the number of Americans and...
- Q A sample of size n = 16 is made from a normal distribution withmean μ. Itturns out that the sample mean is x = 23 and the sample standarddeviation is...
- Q A study was conducted to find out if eating whole-wheat productswas associated with a reductionin body mass index (BMI) in adults. Researchers randomly assignedparticipants into two groups(eaters and non-eaters of...
- Q The admission office wants to estimate the mean age of allstudents enrolled at ZU. The estimate must be within half year ofthe population mean. Assume the population of ages is...
- Q fuel consumption for a Boeing 747 commercial jet in cruisingposition has an approximately normal distribution with a mean of3212 gallons of jet fuel per hour at a standard deviation of...
- Q 2.Complete the problems below.a. A sample 81 desktop PCs have a mean lifespan of 7.5 years anda sample standard deviation of 3.2 years. Construct a 99%confidence interval for the mean...
- Q 1) What is the value of b1? X: 12, 21, 28, 8, 20. Y: 17, 15, 22,19, 242) What is the value of b0? X: 12, 21, 28, 8, 20....
- Q Find critical value tα/2 for n = 15 and 98%confidence level.A.±2.6245B.±2.4142C.±2.4460D.±2.5551
- Q The motion picture industry is a competitive business. More than50 studios produce several hundred new motion pictures each year,and the financial success of the motion pictures variesconsiderably. The opening weekend...
- Q According to a study conducted by a statistical​ organization,the proportion of people who are satisfied with the way things aregoing in their lives is 0.76 . Suppose that a random...
- Q An educator claims that the average salary of substituteteachers in school districts in Allegheny County, Pennsylvania, isless than $60 per day. A random sample of eight school districts isselected, and...
- Q Exercise 9-22 Algo It is advertised that the average brakingdistance for a small car traveling at 65 miles per hour equals 120feet. A transportation researcher wants to determine if thestatement...
- Q 1. The amount of time an alkaline battery lasts is normallydistributed with a mean life of19 hours and standard deviation of 1.2 hours.(a) 68% of all batteries will last between...
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