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The attached data from the Dutchess County, NY, Recorder of Deeds office provides data on homes sold in 2006. Your task is to analyze this data and determine the dependency of Selling Price on three variables: Living Area, Number of Bedrooms and Number of Bathrooms. The dependent variable is...
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the regional tupperware dealers earned these commissions last month: $4,377.47, $3,183.76, $1,970.16, $2,270.88, $3,860.06, $2,508.55, $1,569.64, $4,205.30, $1,663.68, $3,960.71.what was the mean commision earned? round your answers to the nearest cents.
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Harley Davidson motorcycles makes up 14% of all motorcycles registered in the US. You plan to interview an SRS of 400 motorcycle owners. What are the mean and standard deviation of the proportions of random samples of 400 motorcylce owners who own Harleys?
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Military radar and missile detection systems are designed to warn a country of enemy attacks. A reliability question deals with the ability of the detection system to identify an attack and issue a warning. Assume that a particular detection system has a 0.90 probability of detecting a missile...
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Find the probability that the utility bill is more than $140
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The Arc electric company had an income of 101 million dollars last year. Suppose that mean income for the firms in the industry for a year is 95 million dollars with a standard deviation of 3 million. If incomes for the industry are distributed normally, what is the probability that a randomly...
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in a certain town,69% of the voters favor a ballon measure. for groups of 28 voters, find the variance for the number who favor the measure
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in a homicide case 4 different witnesses picked the same man from a line up. the line up contained 5 men. if the identifications were made by ramdom guesses, find the probability thatall witnesses would pick the same person
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3.12 In a study to determine whether a certain stimulant produces hyperactivitiy, 55 mice were injected with 10 micrograms of the stimulant. Afterward, each mouse is given a hyperactivity rating score. The mean score was x=14.9 and s= 2.8. Give a 95% confidence interval for M=population mean...
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Ineed help with statistics
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- 1. A school administrator wonders if students whose first language is not English score differently on the math portion of the sat exam than students whose first language is English. The mean SAT math score of students whose first language is english is 516 on the basis of data obtained from the college board. A simple random sample of 20 students whose first language is not English result in a sample mean SAT math score of 522. SAT math score are normally distributed with a population standard deviation of 114. Why is it necessary for SAT math scores to be normally distributed to test the hypothesis?
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