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Six vitamin and three sugar tablets identical in appearance are in a box. One tablet is taken at random and given to Person A. A tablet is then selected and given to Person B. What is the probability that
a. Person A was given a vitamin tablet?b. Person B was given a sugar tablet given that Person A was given a vitamin tablet?c. neither was given vitamin tablets?d. both were given vitamin tablets?e. exactly one person was given a vitamin tablet?f. Person A was given a sugar tablet and Person B was given a vitamin tablet?g. Person A was given a vitamin tablet and Person B was given a sugar tablet?
A sample of 10 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 23. (Round your answers to 3 decimal places.) (a) The standard error of the mean is_____?
Research shows that the life time of Everlast automobile tires is normally distributed with a mean value of 70,000 miles. What is the probability of having a tire that lasts more than 80,000 miles.
A local bank reported to the federal government that its 5,246 saving accounts have a mean of $1,000 and standard deviation of $240.
Suppose a fast food restaurant wishes to estimate average sales volume for a new menu item. The restaurant has analyzed the sales of the item at a similar outlet and observed the following results:
Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0.
If one of the Titanic passengers is randomly selected, find the probability of getting a woman or someone who didn't survive the sinking.
Verify that the fitted values have the same mean as the actual y-values, and that the residuals have mean zero and show that the variance of the fitted values plus the variance of the residuals adds up to the variance of y. Find the R-squared.
Illustrate that probability distribution of X satisfies properties of a discrete probability distribution.
What are the endpoints of a 95 percent confidence interval for the proportion defective. (Round your answers to 3 decimal places).
Suppose you have drawn a simple random sample of 400 business executives. In this sample, 150 executives owned Blackberries.
The level of significance indicates the probability of rejecting a false null hypothesis.
A slot machine in Reno costs $1 to play. If the jackpot is $1,000 and the expected value is $ - 0.50 find the probability of winning.
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