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The average cost of a traditional open-heart surgery is claimed to be, $49,160. If you suspect that the claim exaggerates the cost, how would you set up the null and alternative hypotheses?
The mean of a normal distribution probability is 400 pounds. The standard deviation is 10. What is the area between 415 pounds and the mean of 400 pounds? (Round to 4 decimals)
Use the binomial distribution formula to calculate the probability that:
The class ends the year with a mean of 68 and a stadard deviation of 9, the prof decides to bell curve the marks so that the top 10% gets an A (80%). What z score must a student achieve to recieve an A? What raw grade does this correspond to?
A cereal manufacturer seeks to test their newest product against competitor's. A group of 100 children was asked to measure each brand, and then to express a preference.
78 percent of the males attended college. A management trainee is selected at random. What is the probability that the person selected is a female who did attend college?
one of mendels breeding trials came out as follows. make a chi-square test to see whether these data were fudged.type
The percentage rates of home ownership for 6 randomly selected states are listed below. Estimate the population variance and standard deviation for the percentage rate of home ownership with 95% confidence. Round sample variance and the final answer ..
Testing the new idea on actual ?ights would cost $60,000, and the results would have a 0.85 probability of correctly detecting the state of nature. What should Swiss do?
If you have n independent flips of a coin with probability p of landing heads. And a changeover occurs whenever an outcome differs from the one preceding it.
What is the p-value associated with the above sample result?
What is the probability that the value of the average score for this sample will lie in the internal 970 and 1030? Assume that the population distribution is normal.
suppose that gmat scores are normally distributed with a mean of 530 and a standard deviation of 100. a school only
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