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Who turned a telescope on the stars, saw sunspots, and spent his final years under house arrest?
If incomes for the industry are distributed normally, what is the probability that a randomly selected firm will earn less than Arc?
the iqs of 600 applicants of a certain college are approximately normally distributed with a mean of 115 and a standard
suppose probability samples of size n2 are selected from 1 2 3 4 with probabilities d1.4 d2.4 d3.1 and d4.1.
suppose you want to sample the music of a band you havent heard before. youre given 5 cds each with 12 tracks. youll
Only 40% of these eruptions last longer than 2 minutes. For each of the following random variables, write down the distribution and the PMF. (Identify all parameters) What are the expectation and variance?
it is known that the population mean for the full scale iq of the wais is 100 with a standard deviation of 15. a
bull construct a test of 20 objective type items in your subject. administer test to a group of 50 nbspstudents conduct
What can we say with 99% confidence about the maximum error, if we use the sample proportion as an estimate of the true proportion of claims filed against this insurance company that exceed $1,200?
One sample has a variance of s2=6 and a second sample has a variance of s2=8. If the two samples are the same size (n1=n2), then what is the pooled variance for the two samples?
Create a frequency distribution table for your data. You can use Excel or Word. Calculate the standard deviation. Calculate the variance.
People in a large population average 60 inches tall. You take a random sample and will be given a dollar for each person in your sample who is over 65 inches tall.
Would it be reasonable to conclude that the population distribution is Poisson with a mean of 2.0?
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