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In a normal distribution of 1,000 aptitude test scores, with a mean of 60 and a standard deviation of 8, how many scores fall:
A) above 50?
B) between 48 and 52?
Create a 99 percent confidence interval for mean daily intake of milk. You may suppose daily intake amounts are usually distributed.
Suppose that X1,..,Xn form a random sample from the normal distribution with unknown mean M and unknown standard deviation S, and let m and s denote the MLEs of M and S. for the sample size n=17, find a value of k such that P(m > M +ks) = 0.95
The following data represent glucose blood levels(mg/100ml) after a 12 hour fast for random sample of 70 women: Employ 6 classes and make a frequency distribution table.
Which is the estimated or dear proportion of defective cups in the population?
How many ways can she choose 4 dissimilar rides if order does not matter? If she has chosen the first weeks rides, how many ways can she choose four more different rides for second week? Suppose that order does not matter.
Such things as historical documents, newspaper reports, TV and radio broadcasts, when used in research, represents
Median can be a more suitable measure of central tendency than mean if distribution of data is extremely skewed.
Does this sample give sufficient evidence to conclude that self-esteem scores for group-participation adolescents are significantly different from those of general population? Use two-tailed test with α = .01.
Find out the value of correlation coefficient. Make a regression model to predict winning percentage utilizing all of the data.
You have two unbiased estimates, e 1 and e 2 , of a quantity with variances V 1 and V 2 respectively, and covariance Cov {e1,e 2 } = C. Form a new unbiased estimate:
Formulate the hypotheses to test to see if the mean of the population is at least 12 ounces.
Utilize this information to construct a probability table, and then calculate each of the given probabilities:P (female and domestic car).
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