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Four hundred draws are made at random with replacement from a box. The average of the draws is 152.4, and their SD is 18. Someone claims that the average of the box equals 150. Is this plausible?
the professor plots a histogram of these several proportions. Should a Normal model be used to represent the sampling distribution of the proportion of tails?
q1. the signs on an elevator states maximum capacity 1140 kilogram or 16 persons. if the mean weight is 75 kilos and
a population has a mean of mu 30 and a dtadard deviation of 5. if 5 points were added to every score in the population
it is known that monthly spending by individuals in a community is normally distributed. to estimate the average
the thickness of a laminated covering for a wood surface is normally distributed with a mean of 5 millimeters and a
In Colorado Springs the newspaper runs mug shots of wanted criminals. The 17% of those published are arrested through information provided to the police. If 200 are published, find the probability that less than 30 are arrested.
which of the following is an important feature of all evidence-based clinical practice guidelines?a. they should be
The number of degrees of freedom for the appropriate chi-square distribution in a test of independence is:
While some teenagers received no allowance, others reported receiving $200 per week. Based on this information, the mean allowance for U.S. teenagers is most likely 0 $50.
In the last quarter of 2007 a group of 64 mutual funds had a mean return of 0.9% with a standard deviation of 5.2%. Consider the normal model N(0.009.052) for the returns of these mutual funds.
thirty 30 students were asked if they voted for hilary clinton or john nosh for president. eighteen 18 said that they
the average life expectancy of tires produced by the whitney tire company has been 40000 miles. management beliveves
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