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1. In a bag there are 2 red, 3 yellow, 4 green, and 6 blue marbles. What is the probability of P (yellow or green)?
Choose the best answer from the options below:
A 6 / 10
B 7 / 15
C 3 / 10
D 2 / 15
2. A spinner has the numbers 1 thru 9. The spinner is spun once. What is the probability of P (3, 6 or 8)? Write the answer as a percent.
A 30%
B 40%
C 33.33%
D 100%
3. A spinner has the numbers 1 thru 9. What is the probability of P(less than 6)? Write the answer as a decimal.
A 0.222
B 0.333
C 0.444
D 0.555
A large internet retailer is studying the lead time (elapsed time between the time when the order is placed and the time it is filed). The table below gives the lead times (in days) for a random sample of recent orders.
a repeated-measures study comparing two treatments with n 4 participants produces md 2 and ss 75 for the difference
A car company makes two models that come in three colors. The following table shows the production volume for last week: What is probability that a car produce last week is Brown
on a multiple choice test of 13 questions each question has four 4 possible answers one of which is correct. for
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
a random sample of 70 needles was taken from a medical manufacturing facility and 24 were found to be defective.
Develop a multiple linear regression equation that describes the relationship between tenure and the other variables in the chart above. Use the Analysis Toolpak located in Excel to perform this multiple regression.
How many hours of TV do the 1% of women who watch the most TV per week watch? Find the comparable value for the men.
In a large section of a statistics class, the points for the final exam are normally distributed with a mean of 72 and a standard deviation of 9. Find the lowest score on the final exam that would qualify a student for an A, a B and a C.
b. Diagram each research design and label tests and treatment precisely
How would one determine which combination of variables is the best (with statistical significance)? If that's not possible, can we show that one combination is statistically significantly worse than the others? What method would be used?
Arrivals tend to follow the Poisson distribution, and service times are exponentially distributed. What is the probability that the shop is empty?
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