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SAT scores. Here are the summary statistics for Verbal SAT scores for a high-school graduating class:
n
Mean
Median
SD
Min
Max
Q1
Q3
Male
80
590
600
97.2
310
800
515
650
Female
82
602
625
102.0
360
770
530
680
a) Create parallel boxplots comparing the scores of boys and girls as best you can from the information given.
b) Write a brief report on these results. Be sure to discuss the shape, center, and spread of the scores.
Suppose the going rate for this procedure by other plumbing shops in the area is $85.00, not including the cost of the new equipment. If No Leak bids the disposal job at $85, on what percentage of such jobs will the actual time required exceed the ..
Consumers reported on average 1.7 problems per vehicle with a popular make and model of a 2006 car. We randomly select a vehicle of the same make, model, and year.
With a population standard deviation of $7810. Use α = 0.01 to test the researcher's theory. Assume wages in this industry are normally distributed, determine the 99% confidence interval of the population mean.
Use the sales forecaster's, predictions to describe a normal probability distribution that can be used to approximate the demand distribution.
a baseball player hit 67 home runs in a season. of the 67 home runs 20 went to right field 22 went to right center
Gambling. A city ballot includes a local initiative that would legalize gambling. The issue is hotly contested, and two groups decide to conduct polls to predict the outcome. The local newspaper finds that 53% of 1200 randomly se- lected voters pl..
Perform the chisquare test for a uniform distribution. At α = .05, does this sample contradict the assumption that sales are the same for each beverage?
At the 0.05 significance level, can we conclude that equal numbers of Canadian retirees living in Hawaii came from each of the four cities?
what is the p-value for a two-tailed t-test with t1.71 based on a single sample of size
Identify a scientific or real-world problem with a relevant data set
Access to the internet to gather population data from the U.S. Census Bureau's website and do a brief keyword search on "Benford's Law" and /or "first digit phenomenon".
Assume that waiting times are approximately normally distributed. Construct a 98% confidence interval for the population mean of waiting times.
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