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In a survey of 300 college graduates, 56% reported that they entered a profession closely related to their college major. If 8 of those survey subjects are randomly selected without replacement for a follow-up survey, what is the probability that 3 of them entered a profession closely related to their major?
Assuming normal populations with equal standard deviations, use the 0.025 level of significance in testing the engineer's claim.
A study was conducted using 139 undergraduates at a large private university who volunteered to participate in the research. One of the items studied was the maximum daily amount of alcohol consumed in the last month.
Find the probability that among 9 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating.
1. What is the probability the first black ball will be drawn in the first three draws? 2. What is the probability the third black ball will be drawn in the first five draws?
Of the orders a job shop receives, 25% are welding jobs and 75% are machining jobs. What is the probability that half of the next five jobs will be machining.
The production manager for Beer etc. produces 2 kinds of beer: light and dark.
a random sample of 225 sat scores has a mean of 1500. assume that sat scores have a population standard deviation of
A random sample of 64 with a mean of 50 and a standard deviation of 20 is taken from a population of 800. Find an interval estimate for the population mean such that we are 95% con?dent that the interval includes the population mean.
What is the maximum allowable value for s, if the life X of a tube is to have probability 0.80 of being between 120 and 200 hours?
Are you lucky? Parapsychologists define ‘‘lucky'' people as individuals who report that seemingly chance events consistently tend to work out in their favor.
An airline's reputation for being on time is often considered in consumer ratings. Based on one year of data for Alaska airlines.
Independent analysis of variance (my choice); Repeated measures analysis of variance, Kruskal-Wallis test, or Friendman;s ANOVA (not a normal distribution
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