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The ages of 25 employees in a company are listed below in a stem and leaf plot. What is the probability that a worker chosen at random will have an age greater than or equal to 30 and less than or equal to 39?
Compute the p-value; and at 95% confidence, test the hypothesis. Assume the population is normally distributed. Compute the test statistic.
In a regression model involving 30 observations, the following estimated regression equation was obtained:
An entomologist writes an article in a scientific journal, which claims that fewer than 7 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Use the parameter p, the true proportion of fireflies unable to produce..
Let R be a unique factorization domain then show that prime element R generates a prime ideal.
To estimate p, we use the proportion p-hat in the sample who answer "Yes." Justify the use of a normal approximation and find the following probabilities.
How large could a tumor grow before a researcher might consider it to be an outlier and would want to double check the measurement.
If you randomly select ten m&m's, what is the probability that exactly three of them are green?
The factorial structure of treatments. What does this plot recommend about suitability of no-interaction assumption here?
Read the data from the fictitious research study regarding diabetes and alcohol consumption, and analyze and interpret the results.
At 95% confidence, test to determine if more than 21% of the population will like the new soft drink.
A researcher hypothesized that the variation in the car rental rates (in US$/day) at a major city airport is less than in the car rental rates down town.
It has been reported that 3% of all cars on the highway are traveling at speeds in excess of 70 mph. If the speeds of four random automobiles are measured via radar, what is the probability that at least one car is going over 70 mph?
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