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Five cards are randomly chosen from a standard deck of 52 cards. Find the probability that there are two or more aces in the hand dealt.
Find a 98% confidence interval for the true mean. Assume that the account balances are normally distributed.
Is the difference in performance significant according to a two-tailed test using a = .05? Use the Mann-Whitney U test to solve the problem.
When would you use ANOVA at your place of employment, in your education, or in politics? Please share the WORDS that would lead you to the null hypothesis for a specific and simple example
A political telephone survey of 260 people asked whether they were in favor or not in favor of a proposed law. Each person was identified as Republican or Democrat. The following contingency table shows the results.
in a bood testing procedure blood samples from 6 people are combined into one mixture. the mixture will only test
To investigate differences between resting pulse rate for smokers and non-smokers, calculate summary statistics for resting pulse for smokers and non-smokers and produce boxplots for resting pulse for smokers and non-smokers. Comment on these stat..
what is the probability that 4 or more live in poverty? what is the probability that 4 live in poverty? what is the expected number (mean) that live in poverty?
the average gas mileage of a gmac runabout is 30.0 miles per gallon. if the gas mileages are normally distributed
The automotive center guarantees customers that the service will take no longer than 20 minutes. If it does take? longer, the customer will receive the service
A researcher would like to study BMI levels in adults 20-40 years of age. She selected 9 patients and found their BMI values to be: 38, 19, 25, 26, 29, 18, 34, 32, 30 The mean BMI level of this group of patients is
a producer of a cartain type of electronic component ships to suppliers in lots of twenty. suppose that 60 of all such
It is known that a healthy human body has an average temperature of 98.6?F, with a standard deviation of 0.95?F. Sixty healthy humans are selected at random. What is the probability that their temperatures average at least 99.1?F?
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