Basic Math question and answers for September 24, 2023
- Q An article compared the drug use of 288 randomly selected highschool seniors exposed to a drug education program (DARE) and 335randomly selected high school seniors who were not exposed to...
- Q The World Bank collected data on the percentage of GDP that acountry spends on health expenditures ("Health expenditure," 2013)and also the percentage of women receiving prenatal care ("Pregnantwoman receiving," 2013)....
- Q Dentists make many people nervous. To see whether suchnervousness elevates blood pressure, the blood pressure and pulserates of 60 subjects were measured in a dental setting and in amedical setting....
- Q Researchers are interested in the relationship between bingedrinking and membership in a Greek life organization on a collegecampus. Suppose the researchers conduct a thorough questionnaire ona random sample of students...
- Q Do faculty and students have similar perceptions of what typesof behavior are inappropriate in the classroom? This question wasexamined by the author of an article. Each individual in a randomsample...
- Q What is Total repeat rate and give an example of how itwould be used?
- Q 1. Use excel function exp( ) to calculate raising e to the powerof (-2.5 + 2*X1 + 3*X2), where X1=5.6 and X2=3.2. Denote the result from part 1 as Y,...
- Q The following sample observations were randomly selected. X: 5 62 7 11 Y: 3 6 4 6 6 (a) Determine the 0.90 confidence interval forthe mean predicted when X =...
- Q Let S denote the 10-element set {a,b,c,d,e,f,g,h,i,j}. How manyways can we construct a subset of S of size 7 ? 120 How many wayscan we construct a subset of S...
- Q a. Find the mean, standard deviation, and five number summariesfor each type of M&M (plain and peanut) for the number ofM&Ms in each bag.b. Use the information found in Step...
- Q To test whether extracurricular activity is a good predictor ofcollege success, a college administrator records whether studentsparticipated in extracurricular activities during high school andtheir subsequent college freshman GPA.ExtracurricularActivityCollegeFreshman GPAYes3.49Yes3.31Yes3.94Yes3.69No2.95No3.86No3.47No2.76No3.85No2.78(a) Code...
- Q The Gravy Company has decided to launch a new advertisementcampaign in grocery stores to promote their products. The idea isto put small signs in the meat section (next to the...
- Q The proportion of public accountants who have changed companieswithin the last three years is to be estimated within 4%. The 95%level of confidence is to be used. A study conducted...
- Q A group of five individuals with high blood pressure were givena new drug that was designed to lower blood pressure. Systolicblood pressure was measured before and after treatment for eachindividual,...
- Q The percentage of income spent on housing (includingmortgage/rent, taxes, utilities) is an important factor loan agentsuse in approving customers for mortgages. A researched selected asample of 20 homeowners in Florida...
- Q 2. Let X ~ Pois (?) ? > 0a. Show explicitly that this family is “very regular,” that is,that R0,R1,R2,R3,R4 hold.R 0 - different parameter values have different functions.R1 -...
- Q 1) A grocery store carries the following items. There are twomain categories of food – conventional and organic ingredients –and four food groups. The data are shown in the following...
- Q A survey of several 9 to 11 year olds recorded the followingamounts spent on a trip to the mall: $22.91,$17.13,$13.60 Constructthe 99% confidence interval for the average amount spent by...
- Q How can the use of linear equations and inequalities assist youwith linear regression to make predictions?
- Q pediatrician wants to determine the relation that may existbetween a? child's height and head circumference. She randomlyselects 5 children and measures their height and headcircumference. The data are summarized below....
- Q There is some evidence that, in the years 1981-85, a simple namechange resulted in a short-term increase in the price of certainbusiness firms' stocks (relative to the prices of similar...
- Q You wish to test the following claim ( H a ) at a significancelevel of ? = 0.001 . H o : p 1 = p 2 H a :...
- Q Please note that for all problems in this course, thestandard cut-off (alpha) for a test of significance will be .05,and you always report the exact power unless SPSS output statesp=.000...
- Q Do heavier cars really use more gasoline? Suppose a car ischosen at random. Let x be the weight of the car (in hundreds ofpounds), and let y be the miles...
- Q Assess this statement using ANOVA: "People with different levelsof education exercise for different amounts of time during theweek."Describe which ANOVA test you used and present the main results,including explaining the...
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