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Scores on a standardized exam are approximately normally distributed with mean score 540 and a standard deviation of 100. Find the probability that a test taker selected at random earns a score in the given range, using the normal distribution as a model.
Do the data in the sample represented in the Excel file support his contention at the .05 level of significance?
The organization is planning to implement a company-wide policy with respect to bereavement leave that provides the same benefits to all employees, regardless of their province/territory of employment or their length of employment. Prepare a memo ..
the mean for coaches is 90 with a sd of 12 and the mean for players is 70 with a sd of 10. what is the probability that
State the correct decision and give justification for your decision.
let the random variable x follow a normal distribution with micro 40 and ? 10. the probability is 0.95 that x is in
Explain how many cars would required to go by the speed trap to be 99.8% sure which at least one driver will warm oncoming traffic of the speed trap.
If X=85 (sample mean), 8 is population standard deviation, and n=64 is sample size, construct a confidence interval estimate for the population mean.
suppose n has a binomial distribution with n trials and success rate p while x has binomial distribution with n trials
a manufacturer of widget will accept a box of widgets is 10 of the widget are randomly selected without replacement
a die has half of the faces red and the other half black. the die is rolled 3 times. let the random variable x
a basket of eggs contains 18 eggs 7 of which are cracked. if we randomly select 8 of the eggs for hard boiling what is
for a given set of data the standard deviation measuresthe difference between the mean and the data point farthest from
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