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a sample of sales records for jmk shows the average revenue per day is $4275 with a standard deviation of $720 following a normal distribution. what is the probability that a random selected day's revenue will be : Less than $3560 between $3750 And $4450 if the breakeven point is $3800 per day what is the probability that the company at least breaks even
the flavor of gum that is purchased. Determine the test value for the data given type number sold spearmint 25 wintergreen 32 cherry 18 cinnamon 43.
can we conclude that women think men are less kind, gentle, and thoughtful in the later survey compared with the earlier one? Hint: For the calculations, assume the latter survey as the first sample.
A nectarine-packing firm claims that the nectarines they ship have a mean weight of 5.22 ounces. A test on n = 10 randomly selected nectarines, gave the following results, in ounces:
If a woman gets a SAT score that is the 67th percentile, find her actual SAT score and her equivalent ACT score. If a woman gets a SAT score of 1220, find her equivalent ACT score.
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
The following frequency table lists the sales of an item and the number of times it has occurred. It was obtained from historical records.
Using the first two digits of the measurement as your stem, construct a stem and leaf display of the data above.
If we reandomly select 5 ball with replacement, what is the probability distribution of x-the number of red balls in the sample?
What is the standard error of measurement for the test? What range of scores would you expect an individual who made 54 on the test to make on another test of similar difficulty? Assume you want to be 68% accurate in your estimate.
Data collection instrument used in managerial research. Why is it significant to make sure that these data collection methods and instruments are both reliable and valid?
What does it mean to say that a particular value of x has a z-score of -2.1?
The batteries in his calculator. What is the probability that all four batteries work? What are the mean and variance for the number of batteries that work?
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