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In a genetics experiment, investigators looked at 300 chromosomes of a particular type and counted the number of sister-chromatid exchanges on each ("On the Nature of Sister-Chromatid Exchanges in 5-BromodeoxyuridineSubstituted Chromosomes," Genetics, 1979: 1251- 1264). A Poisson model was hypothesized for the distribution of the number of exchanges. Test the fit of a Poisson distribution to the data by first estimating m and then combining the counts for x = 8 and x = 9 into one cell.
do males and females differ in the amounts they spend on valentines day? the average expenditure in a sample of 40 male
You are examining a brick manufacturing facility. The process has historically produced 5% nonconforming bricks. Calculate the expected value and standard deviation of the number of nonconforming bricks during a typical hour of production
A political strategist believes that less than 55% of voters in a certain state support a particular issue. He then commisions a poll of 500 voters and 54% of them support this issue. If = .05, is the political strategist's belief warranted?
in a pizzeria they offer eight different toppings for a pizza. moreover you are allowed to double any topping if you
The Food King Chain employs more than 3,000 people. The worker's ages are approximately normally distributed, with a mean of 31 years and a standard deviation of 4.3 years.
You are to ?nd the state-machine diagram for the following electronic vending-machine specification. The vending machine sells jawbreaker candy, one jawbreaker for 25¢. The machine accepts N (nickels = 5¢), D(dimes = 10¢), and Q (quarters = 25¢).
every normal model is defined by its parameters the mean and the standard deviation.suppose that the mean ? 20 and that
This assignment involves displaying an understanding of an independent t-test. Based on my hypothetical research question: What do early childhood educators report about their experiences with fathers' involvement in their programs?
let x be a random variable with probability density function fxx 2e?2x for x gt 0.c let y be an independent random
if you read a report that hospital a has a higher mortality death rate than hospitalb when treating heart attack
a card is drawn at random from a standard 52-card deck. the conditional probability that the card is a 2 given that a 2
Estimate the probability of rejecting a batch if the supplier is manufacturing the bolts with a defect rate of 10%. Is this monitoring plan likely to identify the unacceptable rate of defects?
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