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A report announced that the median sales price of new houses sold one year was ?$221,000?, and the mean sales price was ?$272,100. Assume that the standard deviation of the prices is ?$80,000.
If you select a random sample of n=100?, what is the probability that the sample mean will be less than ?$300,000??
The probability that the sample mean will be less than ?$300,000 is ......?
(Round to the nearest four decimals)
Based on the first 113 missions, and assuming failures occur at the same rate, consider the next 23 missions. What is the probability of exactly two failures? What is the probability of no failures?
A math exam consists of 9 multiple- choice question and 6open-ended problems in which all work must be shown. If each person must answer 6 of the multiple-choice and 3 of the open-ended problems. In how many ways can the question and problems be ..
The mathematics faculty at a college consists of 6 professors, 9 associate professors, 7 assistant professors, and 12 instructors. If one faculty member is randomly selected, find the probability of choosing a professor or an instructor.
Find the mean and standard deviation of the resulting distribution of sample means for nequals =144
Out of 500 students who do not have ESP, about how many could you expect the statistician to declare do have ESP?
cress electronic products manufactures components used in the automotive industry. cress purchases parts for use in its
Garden. A company selling vegetable seeds in packets of 20 estimates that the mean number of seeds that will actually grow is 18, with a standard deviation.
an average of 5 calls coming per minute. What is the probability that up to a minute will elapse until 2 calls have come in to the switchboard?
In a random sanple of 500. 205 answered NO to a question. a) What is the point estimate of the population who answered NO to a question?
What are some things firms can do to promote ethical behavior and help limit scenarios where there are no clear rules or regulations?
Calculate a regression that examines whether or not you can predict if a student wants a lecturer to be extroverted using the student's extroversion score.
What is the p-value associated with this test of hypothesis? Place your answer, rounded to 3 decimal places
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