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8.A pharmaceutical company is performing clinical trials on a new drug that is intended to relieve symptoms for allergy sufferers. Twelve percent of the 300 clinical trial participants experienced the side effect dry mouth.a.What is the population being studied?b.What is the sample being studied?c.Based on the sample, what percentage of the population do you think would suffer from dry mouth?ANS:PTS:19.A polling organization conducts a telephone poll of 850 registered voters and asks which candidate they will vote for in the upcoming presidential election. Forty-three percent of the respondents prefer candidate A and 45% prefer candidate B.a.What is the population being studied?b.What is the sample being studied?c.Based on the sample, what percentage of the population do you think would vote for candidate B?ANS:PTS:110.The following table shows the starting salaries of a sample of recent business graduates.Income (In $1,000s)Number of Graduates15 194020 246025 298030 341835 39a.What percentage of graduates in the sample had starting salaries of at least $30,000?b.Of the graduates in the sample, what percentage had starting salaries of less than $25,000?c.Based on this sample, what percentage of all business graduates do you estimate to have starting salaries of at least $20,000?2ANS:
PTS:111.Michael, Inc., a manufacturer of electric guitars, is a small firm with 50 employees. The table below shows the hourly wage distribution of the employees.Hourly Wages (In Dollars)Number of Employees10 1314 171218 212022 2510a.How many employees receive hourly wages of at least $18?b.What percentage of the employees has hourly wages of at least $18?c.What percentage of the employees has hourly wages of less than $14?8ANS:PTS:112.Laura Naples, Manager of Heritage Inn, periodically collects and tabulates information about a sample of the hotel’s overnight guests. This information aids her in planning and schedulingdecisions she must make. The table below lists data on ten randomly selected hotel registrants, collected as the registrants checked out. The data listed for each registrant are: number of people in the group; birth date of person registering; shuttle service used, yes or no; total telephone charges incurred; and reason for stay, business or personal.Name of RegistrantPeopleIn GroupBirthDate(mm/dd/yy)ShuttleUsedTelephoneChargesReasonFor StayAdam Norquist105/07/59yes$0.00personalMica Pepper411/23/48no12.46businessClaude Shepler204/30/73no1.20businessAmy Rodriquez212/16/71no2.90businessTony DiMarco105/09/39yes0.00personalAmy Franklin309/14/69yes4.65businessTammy Roberts204/22/66no9.35personalEd Blackstone510/28/54yes2.10personalMary Silverman111/12/49no1.85businessTodd Atherton201/30/62no5.80businessa.How many elements are there in the data set?b.How many variables are there in the data set?c.How many observations are there in the data set?