Statistics question and answers for August 31, 2023
- Q 1). If a couple has two children, what is the probability thatthey are both girls assuming that the older one is a girl?2). Suppose that we have two dice, the...
- Q Recently, a nurse commented that when a patient calls themedical advice line claiming to have the flu, the chance that he orshe truly has the flu (and not just a...
- Q Red Bull is the most popular energy drink in sales in the UnitedStates. Red Bull GmbH (the parent company) has observed that dailysales are normally distributed with an average of...
- Q 4.40 Two children.Each of us has an ABOblood type, which describes whether two characteristic, called Aand B, are present. Every one of us has two blood type alleles(gene forms), one...
- Q The mean number of fatal accidents between Mile markers 0 and40 is 5 per year.What is the probability there are a)exactly 3 fatalities b) less than 5 fatalities, c) 4...
- Q Use the following information to answer the next 3 questions.Parents of children with developmental disorders can apply forfederal funding, to help pay for psychosocial rehabilitation. Asociologist working for the annual...
- Q Russia has recently started a push for stronger smokingregulations much like those in Western countries concerningcigarette advertising, smoking in public places, and so on. Listedbelow is sample data on smoking...
- Q 1 point) Independent random samples, each containing 60observations, were selected from two populations. The samples frompopulations 1 and 2 produced 33 and 22 successes, respectively.Test H0:(p1?p2)=0 against Ha:(p1?p2)?0. Use ?=0.08.(a)...
- Q 7. A nutritionist wants to determine whether people whoregularly drink one protein shake per day have differentcholesterol levels than people in general. In the generalpopulation, cholesterol is normally distributed with...
- Q What is meant by a “null” hypothesis?How do you test a null hypothesis?
- Q (1 point) Suppose a group of 1000 smokers (who all wanted togive up smoking) were randomly assigned to receive anantidepressant drug or a placebo for six weeks. Of the 184...
- Q Consider these 4 samples potentially drawn from 4 differentpopulations. Sample #1) 25 19 14 21 18 18 19 19 Sample #2) 25 15 2220 15 20 16 20 20 16...
- Q (13pt) The U.S. Census Bureau computes quarterly vacancy andhomeownership rates by state and metropolitan statistical areas.The following data are the rental vacancy rates in percentage (%)grouped by region for the...
- Q Refer to the CDI data set in Appendix C.2.a. For each geographic region, regress the number of serious crimesin a CDI (Y) againstpopulation density (X" total population divided by land...
- Q 1A) Twenty laboratory mice were randomly divided into two groupsof 10. Each group was fed according to a prescribed diet. At theend of 3 weeks, the weight gained by each...
- Q Show the formula for Lq for an M/G/1 system simplifies to theformula for an M/M/1 when G is exponential distribution (G=M)
- Q A) The proportion of subjects who answered the last question oftheir survey as "Very Satisfied" is 0.80. The hospital is hoping toincrease that proportion to 0.9 and they consider a...
- Q TheLos Angeles Times regularity reports the air quality index forvarious areas os Southern California. A sample of air quality indexvalues for San Bernardino provides the following data: 56, 84, 116,96,...
- Q Question 1:Professor Handy measured the time inseconds required to catch a falling meter stick for 12 randomlyselected students’ dominant hand and nondominant hand. The MinitabExpress file contains these measurements. Professor...
- Q The following data lists the ages of a random selection ofactresses when they won an award in the category of Best? Actress,along with the ages of actors when they won...
- Q Listed below in order by row are the annual high values of the Dow Jones Industrial Average for each year beginning with 1980. What is the best predicted value for...
- Q Listed below are the global mean temperatures (in degrees °C) of the earth’s surface for the years 1950, 1955, 1960, 1965, 1970, 1975, 1980, 1985, 1990, 1995, 2000, and 2005....
- Q A fitness course claims that it can improve an individual'sphysical ability. To test the effect of a physical fitness courseon one's physical ability, the number of sit-ups that a personcould...
- Q A full-service car wash has an automated exterior conveyor carwash system that does the initial cleaning in a few minutes.However, once the car is through the system, car wash workers...
- Q 6) In a random sample of​ males, it was found that 25 write withtheir left hands and 209 do not. In a random sample of​ females, itwas found that 75...
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