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A study of 200 advertising firms revealed their income after taxes:
Income after Taxes Number of FirmsUnder $1 million 102$1 million to $20 million 61$20 million or more 37
a. What is the probability an advertising firm selected at random has under $1 million in income after taxes?
The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?
Suppose we wish to estimate the true population of HSB students who own cars. We randomly sample 100 HSB students and find 20 students own a car.
The sample mean of the accounts is found to be y-bar = $94.22, and the sample variance is equal to $455.21. Estimate mu and place a bound on the error of estimation.
What is the probability of randomly selecting a person who is conservative and then selecting from that group someone who is a nursing major?
Choose any medical scientific study who applied a Bayer Theorem and write down the article information (title, author, location, and date) of the article
the finished subassembly 2 must be inspected. A list of activities, their predecessors, and their durations. Draw a project diagram (network) for this project? What is the total project time?
Calculate the mean, median, range, and standard deviation for the Body Fat Versus Weight data set. Report your findings, and interpret the meanings of each measurement.
3 voters are randomly selected (with replacement) from a group of 1,500 people. The group is known to be 20% republican. What is the probability that all of them are republicans?
Determine the shortest time spent waiting for a heart that world still place a patient in the top 10% of waiting times? In days?"
Why do you think it is significant to describe both the measure of central tendency and the measure of dispersion when talking about a data set?
Which study has the higher probability of a Type II error, the 60-subject study or the 100 -subject study? Which study has higher power?
Normally distributed with a mean of $ 1750 and a standard deviation of 300. What's the probability that a randomly selected state has a per capita GNP at or below $950?
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