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A student finishes a 8 question true-false exam by random guessing. What is the probability of the student answering exactly 2 questions correctly?
john conducted his study to measure self-esteem among victims of domestic violence before and after they complete an
For a sample of 11 employers, the most recent hourly wage increases were 18, 30, 25, 5, 7, 2, 20, 12, 15, 55, and 40 cents per hour. For these sample data, determine the mean, median, range, and midrange.
what do you conclude about the claim below? do not use formal procedures or exact calculations. use only the rare event
The distribution of widget weights is bell-shaped. The widget weights have a mean of 61 ounces and a standard deviation of 11 ounces.
Which salesperson should be assigned to each region to minimize total time? Identify the optimal assignments and compute total minimum time.
If observations are sampled from a distribution that appears to be normal, does this suggest that the mean should be preferred over the trimmed mean and median?
data on the number of occurrences per time period and observed frequencies follow. compute the value of the test
Find and interpret the values of r and r2 for the simple linear regression relating the blood lactate concentration and the boxer's perceived recovery.
what are the basic assumptions underlying multiple means test and why do they
Probability of a person being blood type b is 13%. What is the probability that 4 unrelated people in random selection will all be type b?
question a market researcher wants to test to determine if families of four in city a spend less per week on average
A sample of 100 bugs yields an average weight of 3.6 ounces. Assuming that the population standard deviation is 0.6 ounces, find the margin of error in estimating μ (the true mean weight of all bugs of this type) at the 90 % level of confidence.
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