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A random sample of 100 observations is obtained from a normally distributed population with a standard deviation of 10. What is a 95% confidence interval for the mean of the population if the sample mean is 40?
Adele Weiss manages the campus flower shop. Flowers must be ordered three days in advance from her supplier in Mexico. Advance sales are so small that Weiss has no way to estimate the demand for the red roses.
What is an appropriate sample space for this experiment?
Find out the probability that at least one of the CD's is defective?
Calculate the mean and standard deviation of the following data sets, then produce a five number summary and box plot of data.
Compute the standard error of the sampling distribution of sample means.
For a population with a mean of μ = 50 and a standard deviation of σ = 10, how much error, on average, would you expect between the sample mean (M) and population mean for:
Determine what analysis would you do on each problem (i.e., one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
Utilizing jacobian method finding the probability density function. Utilizing either the CDF method or Jacobian method illustrate the probability density function of Y is given.
Someone gives you 10 to 1 odds that you cannot roll a double number with the roll of a pair of dice. You win $10 if you succeed and you lose $1 if you fail. What is the expected value of the game for you? What can be expected if you play 100 times..
The following table shows the number of miles driven in each trial.
In the biology class the mean score was 79 with standard deviation 5.
In fitting the simple linear regression model Yi ~ N (α + β xi, σ 2 ) to the following data:
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