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Students take at least 2 courses out of Arts, History, and Science. 60% take Arts,80% take History,70% take Science. How many students take all 3?
a. 0.25
b.0.20
c. 0.15
d. 0.05
e. 0.10
You are given an annual time series with 40 consecutive values and asked to fit a fifth-order autoregressive model.
The average labor charge for automobile mechanics is $54 per hour. The standard deviation is $4. Using Chebyshev's theorem, find the percentage of data values that will fall in the range of $48 to $60.
a sample of 400 racing cars showed that 80 of them cost over 700000. what is the 99 confidence interval for the true
why is it popular for advertisments to always state a confidence interval? give an example of where you have seen
a. How many of the individuals selected in your sample are female? b. How is the stratified sample different from the SRS?
sixty percent of all vehicles examined at a certain emissions inspection station pass the inspection. assuming that
compute a 99 confidence interval for the population mean based on the sample 52 50 51 54 55 52 and 53. change the
Does the variability in output appear to differ at the two experience levels? Test the hypotheses at the .05 significance level.
Determine the probability that subscriber didn't rent the car during past 12 months for either business or personal reasons?
Indicate at which point flat-of-curve medicine is experienced in the following example (imagine that antibiotics have been prescribed for a given population of 1,000 elderly persons).
a survey is being planned to determine the mean amount of time corporation executives watch television. a pilot survey
The manufacturer of a nationally known "lite beer" claims that the approval rating for it's product is at least 85%. A local soft drink manufacturer has retained a marketing agency to test the "lite beer".
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