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1)The normal model N (58, 21) describes the distribution of weights of chicken eggs in grams. Suppose that the weight of a randomly selected chicken egg has a z score of 1.78. What is the weight of this egg in grams? Round to the nearest hundredth of a gram. 2)In the United States, of the approximately 2.5 million deaths from all causes, an estimated 300,000 deaths are associated with obesity. Approximately 60% of obese Americans are women and about 40% are men. If obesity were listed as a separate cause it would be the 3rd leading cause of death behind heart disease and cancer. As a result, both money and time are spent searching for solutions to obesity. An American company seeking U.S. government approval for its new weight loss drug must perform an experiment before it can legally sell its product. Suppose it is known that men and women are physiologically different and react differently to medication. So 500 obese volunteers (average age was 47 years) were first separated by gender (there were 191 male subjects, 309 female subjects) then the subjects were randomly assigned to either the treatment or a placebo. The experiment lasted 10 weeks and 8 nurses were involved in its administration, neither the nurses nor the subjects knew if they were receiving the placebo or the actual weight loss drug. A table was created to document the distribution of the volunteers: When the experiment was completed, it was discovered that the Placebo group Females lost an average of 5 lbs, the Weight Loss Group Females lost an average of 7 lbs. a) What's The POPULATION of interest to the American company? b) What's The SAMPLE? c) What's an example of a STATISTIC in this study? d) What's The PARAMETER of greatest interest to the American company?
Use the given confidence level and sample data to find a confidence interval for estimating the population mean
Which combination of factors has greatest likelihood of rejecting null hypothesis?
An auditor for Health Maintenance Services of Georgia reports 40% of policyholders 55 years or older submit a claim during the year. Fifteen policyholders are randomly selected for company records.
To what probabilities do each of the following sigma levels correspond to, based on a standard normal curve: 3 sigma, 4sigma, 5 sigma, and 6 sigma? (Hint: Use the NORMSDIST function in Excel.
Plot this 20 maxima again on normal probability paper derive the theoretical distribution function for this 20 maxima and draw the CDF in the same plot.
A manager receives a forecast for next year. Demand is projected to be 600 units for the first half of the year and 900 units for the second half.
Find a 95 percent confidence interval for the true proportion of all current Bank of America customers who would respond with a 9 or 10.
The width of a rectangular playground is 2x-5 feet and the length is 3x+9 feet. Write a polynomial P(x) that represents the perimeter and then evaluate this perimeter polynomial if x is 4 feet.
What is probability that all parts in the sample are defective, what is probability that the sample will containe 3 defective parts of more.
Multiple choices based on regression analysis - how much or how many but instead is assigned values to represent categories
What is the lowest raw score that a client must have on Anxiety Scale A in order to be admitted into this new group? Also assuming some clinics use Anxiety Scale B and often refer their clients to Mary, what is the cutoff point (lowest raw score) ..
Department store accepts three types of credit cards, MasterCard, Visa, and their own store card. Charges are normally distributed. A random sample of 18 credit card purchases included 6 MasterCard
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