1. The weight of 6-week-old poults (juvenile turkeys) arenormally distributed with a mean 8.6 pounds and standard deviation1.9 pounds. Find the first quartile of the weight.
A) 8.80 lb B) 8.06 lb C) 6.60 lb D) 7.33 lb
2. A gardener buys a package of seeds. Eighty-seven percent ofseeds of this type germinate. The gardener plants 130 seeds.Approximate the probability that 81% or more seeds germinate.
A) 0.9761 B) 0.9884 C) 0.9904 D) 0.9842
3. A population has a standard deviation σ = 20.2. Howlarge a sample must be drawn so that a 95% confidence interval forμ will have a margin of error equal to 4.2?
4. A college admissions officer takes a simple random sample of120 entering freshmen and computes their mean mathematics SAT scoreto be 448. Assume the population standard deviation is 116. Basedon a 98% confidence interval for the mean mathematics SAT score, isit likely that the mean mathematics SAT score for entering freshmenclass is greater than 464? (Hint: you should first construct theconfidence interval for the mean mathematics SAT score.). AnswerYes or No and give the reasoning for youranswer.
