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A high school with 1000 students offers two foreign language courses : French and Japanese. There are 200 students in the French class roster, and 80 students in the Japanese class roster. We also know that 30 students enroll in both courses.
Find the probability that a random selected student takes neither foreign language course. (Show work and write the answer in simplest fraction form).
Calculate a 99% confidence interval for the true mean difference between pretreatment and after treatment testosterone levels of young male TBI patients.
At.05 significance level, can we conclude that larger proportion of the agents think the economy is expanding this month?
Calculate the value of Pearson correlation. Illustrate what information is provided by the numerical value of the Pearson correlation.
mary has a telephone with two lines that allows her to talk with a friend and have at most one other friend on hold. on
Can we conclude that the mean age of the population from which the sample may be presumed to have been drawn is less than 60 years? Let α = .05
a simple random sample of families living in a chicago suburb was selected. each family was asked to estimate the
If a 99% confidence interval is calculated to estimate the difference between the average hourly rates for each type of graduate, what is the margin of error? Assume both population standard deviations are equal.
each student in a class of 80 rolls 8 dice in order to perform inference about the mean of all dice rolls which happens
hoping to lure more shoppers downtown a city built a new public parking garage in the central business distri. the city
a left-tail area in the chi-square distribution equals 0.95. for df10 the table value
periodically merrill lynch customers are asked to evaluate merrill lynch financial consultants and services 2000
Assume the population standard deviation (s) is 0.5 and the sample size (n) is 100. Calculate the values for alpha, a type I error and beta, a type II error. (To calculate Beta, consider a mean that is 1 standard error away from the lower end valu..
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