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The life span of a battery is normally distributed, with a mean of 2100 hours and a standard deviation of 50 hours. what percent of batteries have a life span that is more than 2185 hours? Would it be unusual for a battery to have a life span that is more than 2185 hours? Explain the reasoning
1)What is the number of Observations in the sample? Write the least squares regression (prediction) equation. Test the usefulness of variable x2 in the model at alpha =.05. Calculate the t statistic and state your conclusions
Provide students with a basic understanding of several quantitative techniques that are used extensively for decision making in business.
What is the deference between a complete factorial design and an incomplete factorial design and explain the difference between a two-way AMOVA and a three-way ANOVA.
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A package contains 18 candy canes, 13 of which are cracked. If 4 are selected, find the probability of getting exactly four cracked candy canes.
Draw out what this would look like as a histogram and describe the shape of the distribution - what would look like as a histogram
8-3 Mike Dreskin manages a large Los Angeles movie theater complex called Cinema I, II, III, and IV. Each of the four auditoriums plays a different film; the schedule is set so that starting times are staggered to avoid the large crowds that would oc..
Does the coin flipping process you just completed illustrate the Law of Large Numbers? Why or why not?
Mall security estimates that the average daily per-store theft is no more than $250, but wants to determine the accuracy of this statistic. The company researcher takes a sample of 64 clerks and finds that =$252 and s = $10.
Find the probability that exactly 15 babies are female and find the probability that no more than 12 babies are female.
The makers of Compute-All know that in the past, 40% of their sales were from people under 30 years old, 45% of their sales were from people who are between 30 and 50 years old, and 15% of their sales were from people who are over 50 years old...
The probability that I go to the gym on any given day of the week is 30%. Find the probability distribution of the number of times that I go to the gym over the course of one week (7 days).
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