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How often do you watch movies at home ? A USA Today snapshot found that about 7 in 10 adults say they watch movies at home at least one a week. Suppose a random sample of n = 50 adults are polled and asked if they had watched a movie at home this week. Let us assume that p = 0.7 is, in fact, correct. What are the probabilities for the following events ? a) Fewer than 30 individuals watched a movie at home this week ? b) More than 42 individuals watched a movie at home this week ? c) Fewer than 10 individuals did NOT watch a movie at home this week ?
She has been a victim of domestic abuse at some point in her life. Find the probability that more than 22 of the women sampled have not been the victim of domestic abuse.
Find the least-squares regression line to predict chirps per second based on temperature. increase in temperature. Predict the chirps per second if it is 83.3 degrees.
It will take 30 minutes regardless of the traffic conditions. Lynn's utility for travel time is: U(15 minutes) = 0.9, U(30 minutes) = 0.7, and U(40 minutes) = 0.2. Which route will minimize Lynn's expected travel time?
Find the probability that both light bulbs failed the test. Find the probability that both light bulbs passed the test. find the probability that at least one light bulb failed the test.
Support colour-coding on packaged food to indicate healthier options
Determine probability, P(Z
Defective calculator is 10%. If 10 calculators are selected at random, what is the probability that 4 or more of the calculators will be defective?
Two teams of workers assemble automobile engines at a manufacturing plant in Michigan. Quality control personnel inspect a random sample of the teams assemblies and judge
Using What's Best! (Or solver) find the least-cost matrix.
Construct a frequency distribution and construct a histogram for the following data and use seven intervals, starting with 30-39.
Wwhat are our h0 and ha ? (c) compute zobt.(d) with a= .05, what is zcrit? (E) do we have evidence of a relationship in the population? if so describe the relationship.
Find the value of q-hat from proportion and degrees of freedom used to find the t-score.
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