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A major credit card company has determined that customers charge between $100 and $1100 per month. Given that the average monthly amount charged is uniformly distributed, what percent of monthly charges are between $100 and $1100?
Let the random variable X denote the number of emergency calls received by the campus police office each day. The probability mass function of X is given by:
Solve the differential equation, 12y=by-4y' writing the solution as y as a function of x (isolating y).
he probability that a pumpkin seed will germinate is 70%. A gardener plants the pumpkins in batches of 12. What is the mean of the distribution? What is the variance of the distribution?
Can you conclude that information in article is untrue? Use 0.05 significance level. Find out p-value and explain its meaning.
Compute the pdf of continuous random variable Z where Z = X + Y and X is a continuous random variable uniformly distributed on [0, 2] and Y is a continuous random variable uniformly distributed on [0, 4]. Assume that X and Y are independent.
Out of 1000 randomly selected people at the DMV, about how many would be expected to have to wait i) between 26.4 and 32.8 minutes? ii) longer than 39.2 minutes.
Ffind the probability that exactly 7 of the 10 consumers recognize the brand name. Also find the probability that the number who recognize the brand name is not 7.
How large a sample should you take if you want to be 95% confident of the results and you want the error of the confidence interval to be no more than .05?
Which are likely to be independent events? For those you think are not, suggest reasons why.
Give a 99% confidence interval for the proportion of all U.S. adults who attended church or synagogue during the week preceding the poll.
When the non-parametric statistics utilized? Write down an example.
Estimate and interpret the p-value of the calculated test statistic.
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