Basic Math question and answers for October 11, 2023
- Q A television station wishes to study the relationship betweenviewership of its 11 p.m. news program and viewer age (18 years orless, 19 to 35, 36 to 54, 55 or older)....
- Q (4 pts.) Couples' therapists performed a study to determinefactors that would predict divorce. A random sample of 180committed couples produced a sample mean of the time that they kneweach other...
- Q hours studiedX^2score on quizY^2XY113932452510397492152598145sigmaX=11 sigmaX^2=39 sigmaY=24 sigmaY^2=164sigmaXY=79part a:1.what is the predictor variable?2. what is the criterion variable?compute the Pearson correlation.3. what is the covariance.4 what is the standard deviation...
- Q Explain the contribution of the Milan Group to familytherapy theory.
- Q Chi-Square Analysis Worksheet MTH 160: StatisticsSuppose the local state university wants to determine whetherthere is a relationship between a student’s gender and a student’smajor in college. The registrar was asked...
- Q 11. Assume that when adults with smartphones are randomly?selected, 57?% use them in meetings or classes. If 20 adultsmartphone users are randomly? selected, find the probability thatexactly 15 of them...
- Q Discuss validity and reliability as "confoundingvariables" and how can they negatively impact the results of astudy? What are confounding variables? Try to provide an example toillustrate your point.
- Q Perform t-test on eRPM for Strategy A and B. H0: A = B vs. H1: A!= B (Two-sided t-test) What is the p-value?StrategyDateeRPMA1-Jun-143.33A2-Jun-142.94A3-Jun-143.03A4-Jun-142.99A5-Jun-143.08A6-Jun-143.14A7-Jun-143.32A8-Jun-143.27A9-Jun-143.15A10-Jun-143.24A11-Jun-143.2A12-Jun-143.21A13-Jun-143.25A14-Jun-143.48A15-Jun-143.47A16-Jun-143.25A17-Jun-143.32A18-Jun-143.46A19-Jun-143.58A20-Jun-143.48A21-Jun-143.48A22-Jun-143.46A23-Jun-143.34A24-Jun-143.33A25-Jun-143.37A26-Jun-143.53A27-Jun-143.67A28-Jun-143.83A29-Jun-143.78A30-Jun-143.48B1-Jun-142.95B2-Jun-142.59B3-Jun-142.76B4-Jun-143B5-Jun-143.24B6-Jun-143.43B7-Jun-143.44B8-Jun-143.46B9-Jun-143.27B10-Jun-143.39B11-Jun-143.37B12-Jun-143.32B13-Jun-143.49B14-Jun-143.53B15-Jun-143.34B16-Jun-143.3B17-Jun-143.33B18-Jun-143.6B19-Jun-143.85B20-Jun-143.89B21-Jun-143.69B22-Jun-143.64B23-Jun-143.6B24-Jun-143.42B25-Jun-143.41B26-Jun-143.72B27-Jun-143.94B28-Jun-144.07B29-Jun-144.05B30-Jun-143.69
- Q (1) The table below isa probability distribution of potential quantity of sales ofGourmet sausages during a game. John Bull has to pay a concessionfee of $200 to receive a permit...
- Q 1. The president of a national real estate company wanted toknow why certain branches of the company outperformed others. Hefelt that the key factors in determining total annual sales ($...
- Q graduate student wants to estimate the number of researchparticipants he will see in the fall semester. Using his data fromthe previous nine semesters, he tabulates a mean of 140 studentsper...
- Q answer the following questions using rhe x-y data set below:X: 2, 6, 5, 4, 8, 4, 1Y: 18, 51, 43, 32, 65, 34, 7use the regression equation to predict a...
- Q The University of Arkansas recently approved out of statetuition discounts for high school students from any state. Thestudents must qualify by meeting certain standards in terms of GPAand standardized test...
- Q A poll surveyed people in six countries to assess attitudestoward a variety of alternate forms of energy. Suppose the data inthe following table are a portion of the poll's findings...
- Q -The weight of an organ in adult males has a? bell-shapeddistribution with a mean of300 grams and a standard deviation of 40 grams. Use theempirical rule to determine the following.a....
- Q A farmer randomly samples 600 eggs and finds that 28 are bad.Find a 95% confidence interval for the actual proportion of badeggs.
- Q 1.A random sample of size 120 is drawn from a largepopulation with mean 38.75 obtain the sd of the distribution of allpossible sample mean ( let the sample sd be...
- Q n = 5 p or ? = 0.15 P(X<2) =
- Q A large cooperation has quality control over its fertilizers.The fertilizes are composed of nitrogen. The fertilizer requires 3mg of nitrogen. The distribution of the percentage of nitrogen isunknown with a...
- Q A sample of 35 two-year colleges in 2012-2013 had a meantuition (for in-state undergraduate students) of $2918. The truestandard deviation of the tuition for these schools is known to be$1079.Calculate...
- Q The article "Plugged In, but Tuned Out"† summarizes data fromtwo surveys of kids age 8 to 18. One survey was conducted in 1999and the other was conducted in 2009. Data...
- Q Brand loyalty and the Chicago Cubs. According to literature onbrand loyalty, consumers who are loyal to a brand are likely toconsistently select the same product. This type of consistencycould come...
- Q You are still trying to estimate the girth of Kerrville toads.You collect 100 toads from many different ponds, rivers, witchescauldrons, etc around Kerrville. This is in the data setdata("toad_girth") in...
- Q Paired sample test, (1) construct a 95% confidence interval and(2) conduct a t-test (? = 5%). This is to report to the NFLcommisioner regarding points scored vs points allowed.Data sets...
- Q The developers of a new online game have determined frompreliminary testing that the scores of players on the first levelof the game can be modelled satisfactorily by a Normal distributionwith...
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