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The lifetime of a certain type of automobile tires (in thousand mile) is normally distributed with mean 40 and standard deviation 6. Find the percentile corresponding to p=52% of tire lifetimes.
At a recent meeting of educational researchers comparison were made between the type of college freshmen attend and the numbers who drop out. Use a significance level of .05 and determine if the type of school and the drop out rate are independent.
A person has purchased 5 of 1,000 tickets sold in a certain raffle. To determine the 10 prizewinners, 10 tickets are drawn at random and without replacement. compute the probability that he wins at least one prize.
Write a short essay (up to 500 words) addressing some of the Puritan beliefs revealed by the works we have covered that led to tensions, conflicts, and concerns among the colonists and/or the Native Americans.
The variance of the observations was 5. Do these data provide sufficient evidence to indicate that the population variance is greater than 4?
If you just had to predict the first digit of X100, what digit should you choose to maximize your chance of being correct, and what is that chance?
Company W is testing a sales software. Their salesforce of 500 people is divided into four regions: Northeast, Southeast, Central and West. Each sales person is expected to sell the same amount of products.
What are the z scores that separate the unusual IQ scores from those that are? usual?
suppose that a stat150 student randomly sampled 500 american high school students to study sat math scores. the math
It is said that a higher proportion of drivers of red cars are given tickets for traffic violations than the drivers of any other color car.
If this condition is not met, you cannot complete the problem.
If the average tax payer who makes $140,000 per year owes the government $18,200 with a standard deviation of $1500, and the IRS receives a 1040 tax documents from a customer who earned $140,000 that claims he only owes $12,000, should the IRS sus..
Weightlifting. The Atlas BodyBuilding Company (ABC) sells starter sets of barbells that consist of one bar, two 20-pound weights, and four 5-pound weights.
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