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Suppose 41% of the students at State U. live on campus, and 66% of the students are in a registered student organization. 27% fall into both categories. What is the probability a randomly selected student commutes and does not participate in a student organization?
Mark makes it a policy not to buy bananas unless the price is 33 cents or less per pound. What proportion of the time would he buy bananas?
Pepsi wanted to test to determine if the males preferred Pepsi more than the females. (a) PConduct the appropriate test and describe the results (ick your own alpha value)
The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?
Find the sample mean and sample standard deviation of the amount citizens spend per year. When finding a confidence interval for the true mean spent of ALL citizens, should we use a z-score or a t-score? Why?
Distributed with the following parameters: μ1 = 100, σ1 = 4, μ2 = 75, σ2 = 4, μ3 = 75, and σ3 = 2. What is the probability that an assembly chosen at random will have combined dimension in excess of 262?
When comparing data from different distributions, what is the benefit of transforming data from these distributions to conform to the standard distribution?
Determining the probability that the two choose the same number?
Be certain to mention the direction of the relationship, the strength of the relationship, and whether our findings are statistically significant
A candy confectioner measures the weight of 30 pieces of candy and obtains a mean and standard deviation of 32.5 gms and 2.6 gms, respectively. Construct the 98% confidence interval for the population mean.
A survey found that 85% of women in a given city enjoy shopping online. Suppose you randomly selected 6 women from the city and ask them whether or not they enjoy shopping online. Find the probability that exactly 4 say they enjoy shopping online.
Ski resort profits $1,500,000 during a good winter with lots of snow. The resort has a loss of $500,000 otherwise. The resort's historical climate data suggests that the probability of a good winter with lots of snow during any given year is 40%.
In an experiment in which a die was rolled 188 times it was counted up how many times each face came up. The results are as follows:
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