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describe Probability of independent events
Consider again the auto repair rates described and if you own two cars and what is the probability that
1) Neither will need repair?
2) Both will need repair?
3) At least one car will need repair?
Statistics and Probability, Statistics
1. What's so bad about making a Type I error? 2. How does the Bonferroni adjustment control for Type I error when many statistical tests are conducted? 3. Why do researchers use ANOVA rather than t-tests to analyze data ...
The time spent(in days) waiting for a kidney transplant for people ages 35-49 can be approximated by the normal distribution, as shown in the figure to the right. (a) What waiting time represents the 99th percentile? (b) ...
Scenario: Dr. Olson is interested in the effects of three different methods for losing weight in long-distance truck-drivers. He tested a sample of 60 truck drivers. Participants were randomly assigned to one of three gr ...
Gary is at the top of Gail's preference list, and Gail is at the top of Gary's preference list. Prove that in every stable matching Gary and Gail are matched to each other.
A survey of 68 courses delivered fully online found a mean of 13.5 videos with a standard deviation of 2.81. You can assume that the number of videos in an online course is normally distributed. Find the 89% confidence i ...
Forty-four percent of consumers with credit cards carry balances from month to month. five consumers with credit cards are randomly selected. What is the probability that all consumers carry a credit card balance?
According to a recent poll, 29% of adults in a certain area have high levels of cholesterol. They report that such elevated levels "could be financially devastating to the regions healthcare system" and are a major conce ...
1. Recall the model for a simple linear regression: where is Normally distributed with mean 0 and variance , where Cov( ) = 0 for all i, j and Cov( = 0 for all i,j.A day trader wishes to develop a prediction model for ...
Grear Tire Company has produced a new tire with an estimated mean lifetime mileage of 36,500 miles. Management also believes that the standard deviation is 5000 miles and that tire mileage is normally distributed. To pro ...
A study found that consumers spend an average of $24 per week in cash without being aware of where it goes. Assume that the amount of cash spent without being aware of where it goes is normally distributed and that the s ...
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