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1. In today's business world, spreadsheets are taken for granted. However, not that long ago, there were neither spreadsheets no PC's. 2. What were some of the impacts when spreadsheets became available? 3. What makes spreadsheets so revolutionary?
4. How do you think analysis was performed back then?
Calculate a standard error for the sample mean production rate for the new method and what is the standard error of the $1600 estimate?
A number of minor automobile accidents occur at various high-risk intersections in Teton County despite traffic lights. The Traffic Department claims that a modification in the type of light will reduce these accidents.
on a psychology exam with m 76 and s 12 tom scored 9 points below the mean mary had a score of x 70 and bill had a
a random sample of 42 college graduates who worked during their program revealed that a student spent an average 5.5
What is the difference between a normal distribution and a standard normal distribution? What is the purpose of using a standard normal distribution instead of the normal distribution?
Is there sufficient evidence for concluding that true average repair time exceeds 200 min? Carry out a test of hypotheses using a significance level of .05.
Produced weigh between 100 grams up to the mean and 49.18% weigh from the mean up to 190 grams. Determine the mean and the standard deviation.
If we assume that attention spans are normally distributed, find a 95% confidence interval for the mean attention span of children playing with this new toy. What is the lower limit of the confidence interval.
the shelf life of a battery produced by one major company is known to be normally distributed with a mean life of 3.5
some commercial airplanes recirculate approximately 50 of the cabin air in order to increase fuel efficiency. the
You draw two cards from a standard deck of 52 cards, but before you draw the second card, you put the first one back and reshuffle the deck.
In a recent study 90 percent of the homes in the United States were found to have largescreen TVs. In a sample of nine homes, what is the probability that:
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