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The weight of an organ in adult males has a bell-shaped distribution with a mean of 330grams and a standard deviation of 50 grams. Use the empirical rule to determine the following.
(A)about 68% of organs will be between what weight?(B) what percentage of organs weights between 230 grams and 430 grams?(C) what percentage of organs weights less than 230 grams and more than 430 grams?(D) what percentage of organs weights between 280 grams and 480 grams?
One question that I have is: Will these sample statistics accurately estimate the purchasing habits of all our customers? Can you share some of your thoughts on that question? Why or why not?
You and 100 of your 200 respondents concerned about nutrition. Is this reason to believe that the percent in your area is higher than the national 40%?
A random sample of eight adults aged 30 years were asked how much they spent on medical costs in the year 2011. The following data were measured.
an investigator is interested in the posibility of merging the capabilities of television and the internet. a random
Frequently, tests that yield abnormal results are repeated for confirmation. What is the probability that for a normal person a test will be at least 1.5 times as high as the upper limit of normal on two seperate occasions?
balls are drawn one at a time from an urn containing 50 balls numbered from 1 to 50. the ball is kept if it is numbered
Would the conclusion remain the same if the two confidence intervals had instead been calculated at 90% confidence? Explain.
At the .01 significance level, can we conclude that there is more variation?
What is the value of the sample mean resonance frequency? The confidence level for one of these intervals is 90% and for the other it is 99%. Which is which, and how can you tell?
Tthe United States during 1993 was $40,500. Assume the standard deviation was $8,500. Should a mobile home selling for $75,000 be considered an outlier? Explain why or why not.
The population of IQ scores forms a normal distribution with a mean of u=100 and a standard deviation with a mean of sigma=15.
What are the five steps for calculating probabilities of events? Please apply these steps to an example.
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