Question
1.The average weight for an adult female Beagle is 26 pounds 8 ounces with a standard deviation of 3 pounds 4 ounces. If the weights
1.The average weight for an adult female Beagle is 26 pounds 8 ounces with a standard deviation of 3 pounds 4 ounces. If the weights of Beagles are approximately normally distributed:
A.What is the probability that an adult female Beagle will weigh between twenty-five pounds and thirty pounds?
B.Obesity in Beagles is considered a serious problem because they are an extremely Afood centric@ breed. If an adult female Beagle is considered obese when it weighs thirty-two pounds or more, how many adult female Beagles in a random sample of 1,280 would you expect to be classified as obese?
2.A recent PEW research poll asked respondents about their opinion of a number of government agencies. Forty-eight percent of those of those surveyed indicated that they have an unfavorable opinion of the Internal Revenue Service. Assuming this figure is accurate for all Americans, if 124 Americans are selected at random:
A.What is the probability that less than sixty-eight have an unfavorable opinion of the IRS?
B.What is the probability that between fifty and sixty, inclusive, have an unfavorable opinion of the IRS?
3.A college cross country team=s average consumption of energy bars on race day is 17.4 bars per day. The team=s coach is budgeting for the upcoming season and attempting to determine how much to spend on energy bars. If a race day is chosen at random:
A.What is the probability that the team consumes between twenty and twenty-five energy bars, inclusive?
B.The coach is considering a bulk purchase that he hopes will cover six consecutive races. What is the probability that the team consumes no more than one hundred twenty energy bars over six consecutive races?
4.According to Bureau of Labor Statistics, the average household spends $624.75 annually on personal care products with a standard deviation of $84.2. If the distribution of spending on personal car products is approximately normal.
A.What is the probability that a household selected at random spends less than $500 per year on personal care products?
B.The top 10% of households will spend what amount or more annually on personal care products?
5.A recent survey reported by the Pew Research center indicated that thirty-eight percent of Americans were more interested in the sport of curling than before after watching recent winter Olympic games on tv. Assuming this figure is accurate for all Americans, if 92 Americans are selected at random:
A.What is the probability that exactly forty-four were more interested in curling?
B.What is the probability that more than thirty were more interested in curling?
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