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Question: Math scores 2005. The National Center for Education Statistics (https://nces.ed.gov/nationsreportcard/) reported 2005 average mathematics achievement scores for eighth graders in all 50 states:
a) Find the median, the IQR, the mean, and the standard deviation of these state averages.
b) Which summary statistics would you report for these data? Why?
c) Write a brief summary of the performance of eighth graders nationwide.
Utilizing the 5% level of significance was there a significant change in cholesterol level. Elucidate your answer to someone who has never ever taken a course in statistics.
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Conduct and interpret a test to determine whether or not there is any difference in the final destination of each model of automobile. Interpret your findings.
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a random sample of size 16 is chosen from a population amp has 90 confidence interval for the standard deviation will
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suppose we select an srs of size n 100 from a large population having proportion p of successes. let x be the number
The parameter of interest is the mean score in this population. The sample is an SRS of size n = 4 drawn from the population. a) Find the mean of the 10 scores in the population. This is the population mean.
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The random variable X is uniformly distributed on (-1, 2) . Derive the pdf of Y = X2.
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