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Suppose we roll a fair four-sided die 11 times. Let X be the count of 3s rolled. Then X has a binomial distribution with n = 11 and p = 0.25.
How to find the probability of:
a) P(X = 0) =
P(X = 3)=
Suppose that a quarter is randomly selected, what is the probability that this quarter has high productivity growth and has a large pay increase?
A study of the time spent shopping in a supermarket for a market basket of 20 specific items showed an approximately uniform distribution between 20 minutes.
How would to solve this statistics question. In a gallop pill of 1,038 adults ,540 said that second-hand smoke is very harmful. What percentage of adults who said second-hand smoke is very harmful?
How would I go about finding a 95% confidence interval for the population mean if a sample of size 20 has a mean of 18.2 and a sample standard deviation of 3.6?
A quality engineer in a light bulb manufacturing factory is planning a study to estimate the average life of a large shipment of light bulbs.
c. Use a 95% confidence interval to estimate the mean value of y when xρ = 6. Plot the upper and lower bounds of the interval on your scattergram.
Mr. Olsen uses an unusual grading system in his class. After each test, he transforms the scores to have a mean of 0 and a standard deviation of 1.
Determine whether the following are demonstrative definitions, enumerative definitions, or definitions by subclass.- "Oak" means a tree that bears acorns.
a certain distribution x and distribution y have the same mean. both distributions are symmetrical but distribution x
What percentage of the pins will be acceptable to the consumer?- If the lathe can be adjusted to have the mean of the lengths to any desired value, what should it be adjusted to? Why?
Assuming that those with 16 years of education completed a bachelor's degree, estimate how many of the people in this sample got a bachelor's degree or higher.
Four people agree to meet at a café at noon. Suppose each person arrives at a time normally distributed with mean 12 moon and SD 5 minutes.
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