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Most undergraduate business students will not go on to become actual practitioners of statistical research and analysis. Considering this fact, why should such individuals bother to become familiar with business statistics?
consider two components whose lifetimes x and y are independent and exponentially distributed with parameters lambdax
Metal stamping machine is producing 10 defective parts per hour. Determine the probability that three or fewer defective parts will be output in a randomly chosen hour, by using the Poisson distribution?
The standard deviation was $6050. Is there evidence at the 1% significance level that the cost of attendance has increased? State the hypothesis?
suppose the mean systolic blood pressure in a group of individuals is 150 mmhg with a standard deviation of 15.
Furnish 2 offices each with a desk, chair, and file cabinet and 2 bookcases. At a local store there are 6 models of desks, 8 models of chairs 4 models of file cabinets and 10 models of bookcases.
a random sample of 25 was drawn from a normal distribution with a standard deviation of 5. the sample size is 400.
there are twelve zodiac signs and each person is born under exactly one sign. suppose that each sign is equally likely
How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis?
It appears that people who are mildly obese are less active than leaner people. One study looked at the average number of minutes per day that people spend standing or walking.
The calcium (Ca) content of a powdered mineral substance was analyzed 10 times with the following percent compositions recorded: 0.0271 0.0282 0.0279 0.0281 0.0268 0.0271 0.0281 0.0269 0.0275 0.0276 a. Find a 99% confidence interval for the true calc..
it has been shown that people drive 5 - 10mph faster than the posted speed limit on a highway. it has been thought that
A process has a capability index of 0.40. This index is interpreted to mean that the process is:
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