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The mean height of women in a country? (ages 20minus?29) is 64.4 inches. A random sample of 60 women in this age group is selected. What is the probability that the mean height for the sample is greater than 65 ?inches? Assume standard deviation is 2.94.
ATM is a best-effort delivery system in which the hardware can discard cells if the network becomes congested. What is the probability of datagram loss.
As a part of your proposals. you need to submit demographic information to help demonstrate that the location chosen by the management teams will be a good investment.
the manufacturer of an mp3 player wanted to know whether a 10 percent reduction in price is enough to increase the
What value of Cronbach's alpha coefficient indicates acceptable interitem reliability?- Why are researchers sometimes not able to test the reliability of their measures?
If a distribution of test scores is normal with a mean of 78 and a standard deviation of 11, what percent of the area lies below 60?
Suppose a pair of dice is rolled. Let X be the total number of spots which turn up. Roll the pair an additional X times.
At today's spot exchange rates 1 U.S. dollar can be exchanged for 9 Mexican pesos or for 111.23 Japanese yen. You have pesos that you would like to exchange.
The 154-day weights (in pounds) of 16 randomly selected Rambouillet lambs on a farm in Nebraska were recorded. The data are given in the following table.
If each item is supposed to have a value within 35 ± 10, what is your estimate of the percentage of items that will fall within this specification?
Table shows a random sample of 200 cyclists and the routes they prefer. Let M = males and H = hilly path.
Calculate measures of central tendency and a histogram to answer this question. You may want to superimpose a normal curve on your histogram. Keep the question simple - e.g., "How much..." or "How often..." Only use ONE variable - do not ask a que..
1. Use Tchebysheff's Theorem to make a statement about the percentage of colleges that have between 145 and 205 teachers. 2. Assume that the distribution is bell shaped. What fraction of the colleges have more that 190 teachers.
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