Basic Math question and answers for October 03, 2023
- Q Suppose 31 pregnant women are sampled who smoke an average of 22cigarettes per day with a variance of 144.00.a) What is the probability that the pregnant women will smoke anaverage...
- Q A researcher wishes to test the effects of excerise on theability to complete a basic skills test. He designs a pre-test andpost-test to give to each participant. You believe that...
- Q Suppose that the national average for the math portion of theCollege Board's SAT is 518. The College Board periodically rescalesthe test scores such that the standard deviation is approximately50. Answer...
- Q to pass a test you have to perform successfully two consecutivetasks, one easy and one hard. the easy task you think you canperform with probability z.and the hard task you...
- Q Is there a way to do this without the binomial probability?Consider the following game: You roll six 6-sided dice d1,…,d6and you win if some number appears 3 or more times....
- Q The rare earth element gadolinium is often used as a contrastingagent for MRIs. The concentration of gadolinium was measured in thedischarge from a wastewater treatment plant near a large medicalfacility....
- Q To get published in an academic journal, you have to provesomething "interesting." As a result, most academics begin theirresearch by investigating hypotheses that, all else equal, areunlikely to be true....
- Q A Nielsen study indicates that 18-to-34 year olds spend a meanof 93 minutes whatching video on their smartphones per week. Assumethat the amount of time watching video on a smartphone...
- Q In the college population, the mean reading comprehension testscore is ? = 75 and ? = 25. Aresearcher wanted to investigate the effect of listening to hip-hopmusic on reading comprehension. She...
- Q The National Sporting Goods Association (NSGA) conducted asurvey of the ages of individuals that purchased skateboardingfootwear. The ages of this survey are summarized in the followingpercent frequency distribution. Assume the...
- Q Reid Harper, the manager at Modix Hotel, makes every effort toensure that customers attempting to make phone reservations do nothave to wait too long to speak with a reservation specialist....
- Q Pick any type of public lottery and find the probability of winningusing combinations or permutations. Be sure to explain the rules tothe lottery( how many numbers chosen, from what set...
- Q Imagine you are in charge of a program in which members areevaluated on five different tests at the end of the program. Whydoesn't it make sense to simply compute the...
- Q Good performance (obtaining a grade of A+) in this probabilityclass depends on your attendance (A) and completion of assignments(C). The probability that you will receive a grade of A+ are...
- Q In psychology, there is a particular Mental Development Index(MDI) used in the study of infants. The scores on the MDI haveapproximately a normal distribution with a mean of 100 andstandard...
- Q 16. A process engineer at Sival Electronics was trying todetermine whether three suppliers would be equally capable ofsupplying the mounting boards for the new “gold plated” componentsthat she was testing....
- Q c. Explain the concept of ANOVA, and say how you can conduct anANOVA analysis for the wages/salaries of three categories ofworkers in your firm. Use an example to illustrate. Clearlyindicate...
- Q Smoking during pregnancy can cause a baby to be born too earlyor to have low birth weight. Design a study that would test thisstatement.? Describe the problem? What is the...
- Q 1. Determine the following probabilities and for each item,provide a sketch of the associated areas (3 points each).a. P(z > 1.69)b. P(z < -2.03)c. P(z > -0.50)d. P(-0.39 < z...
- Q The accompanying data represent the miles per gallon of a randomsample of cars with a? three-cylinder, 1.0 liter engine. ?(a)Compute the? z-score corresponding to the individual who obtained32.7 miles per...
- Q Each value represents the number of mistakes (defects) found ona student loan application. Values for 50 consecutive loanapplications are given. Calculate the appropriate centerline and3-sigma control limits for the c-chart,...
- Q Hair Color and Job Title are examples of:continuous variablescategorical variablesquantitative variablesordinal variablesnumerical variablesdiscrete variablesnone of the above
- Q Please do not use this as an example: For example, let’ssay you had four groups, representing drugs A B C D, with eachgroup composed of 20 people in each group...
- Q Your power plant emits nitrous oxides (NOx) into the atmosphereas a byproduct of burning coal. While your scrubbers collect muchof the pollutant before it leaves your smokestacks, they cannot getit...
- Q What are some of the limitations of using Excel for pivottables/charts? Why does that make software like Tableau moreappealing in the workplace?
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