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The histogram shows the distribution of the prices of a small, plain pizza (in $) for 156 weeks in Dallas, Texas.
Which summary statistics would you choose to summarize the center and spread in these data? Why?
Assume grades in college accounting class are normally distributed with a mean of 82 and a standard deviation of 7. what is the probability that a randomly selected student from this class will have a grade lower than 65?
we know that one way to characterize data is as either a parameter or a statistic. there is another way that data is
the motion picture industry is a competitive business. more than 50 studios produce a total of 300 to 400 new motion
Is the annual average wage of unmarried people (18 - 30) the same as that of married people (31 - 43)?
lester hollar is vice president for human resources for a large manufacturing company. in recent years he has noticed
Mean of 950 and a standard deviation of 200. nancy bright's sat score was 1390. what percentage of students have scores more than nancy bright?
What does this data set imply about the possibility of predicting the boiling point of compounds in this series on the basis of the number of carbon atoms? Compute the correlation coefficient between these two variables, even though the number n i..
Write methods that accept an array or list and returns lowest score, highest score, median score, average score and the standard deviation of the scores.
Assume that a 95% confidence interval for the mean is 14.5
In a certain population, 4% of people are color blind. A subset is to be randomlychosen. How large must the subset be if the probability of its containing at least one colorblind person is at least 95%?
If the limits of the confidence interval of the difference between the means of two normally distributed populations were 3.5 and 5.5 at the 95% confidence level, then we can conclude that we are 95% certain that there is a significant difference ..
Compute the ‘net' expected values for each product (i.e. expected value for its success minus expected value for its failure). Based on these ‘net' expected values, which product should the company pick?
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