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(Bivariate Normal Conditional Calculation). Suppose the systolic blood pressure X and fasting blood sugar Y are jointly distributed as bivariate normal in some population with means 120 and 105, standard deviations 10 and 20, and correlation 0.7. Find the average fasting blood sugar of those with a systolic blood pressure greater than 140.
Explain the difference between a discrete and a continuous random variable. Give two examples of each type of random variable.
Suppose we measured all the heights in centimeters, instead. There are 2.54 cm/inch? Question: What will happen to the covariance?
The function that defines the probability distribution of a continuous random variable is a?For a continuous random variable x, the probability density function f(x) represents.
They both want to know what family member typically does the research about possible honeymoon destinations, and who primarily makes the decision on selecting the destination.
the average cost of tuition room and board at small private liberal arts colleges is reported to be 8500 per term but a
Sketch the distribution involved.
For each of the following, indicate whether or not you would expect it to have a strong seasonal component and why.
Suppose a random sample of size 21 is taken, and the variance of the sample is calculated to be 5.??a. What is (approximately) the probability that the population variance σ² is less than 4?
during each day the probability that your computers operating system crashes at least once is 5 independent of every
How many more students should be included in the sample to be 99% sure the sample mean x is within $7 of the population mean u for all students at this college?
More than 5 percentage points in either direction from what would have been obtained by interviewing all voters in the United States. Find the sample size suggested by this statement.
a.briefly restate your research area of interest.b.identify at least 2 variables for which you would utilize a repeated
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