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Private consumption as a share of GDP is a random quantity that follows a roughly normal distribution. According to an article in BusinessWeek, for the United States that was about 71%.6 Assuming that this value is the mean of a normal distribution, and that the standard deviation of the distribution is 3%, what is the value of private consumption as share of GDP such that you are 90% sure that the actual value falls below it?
Make a histogram showing the probabilties of r = 0, 1, 2, 3, 4, 5, 6, 7 or 8 defective syringes in a random sample of 8 syringes.
A post office has a single line for customers waiting for the next available postal clerk. There are two postal clerks who work at the same rate.
test null hypothesis: Meu=80 against alternative hpothesis=negative = 80 (alpha =.05). What does this tell you about meu?
At the 0.05 significance level, can we conclude that the mean waiting time at the Warren Road MacBurger is less than 3 minutes?
If you were with the franchisee, would you want the level of significance to be higher or lower? why? if you used the franchisee's level of significance, would your power be higher or lower than before or would it not change?
To compare the durabilities of two premium exterior house paints. For α = 0.05, determine if the paints exhibit equal reflectivity. What sampling assumptions are being made?
information from a universitys website states that 55.6 of its students are female. for a research project a graduate
The time between arrivals at a drive-through window of a fast food restaurant follows the distribution given below. The service time distribution is also given in the table below. Use the random numbers provided to simulate the activity of the f..
The sample yielded a mean content of 11.88 ounces, with a standard deviation of 0.24 ounces. Use a 0.05 level of significance and test to see if the machine is in perfect adjustment (perform all six steps of hypothesis testing, including p-values)..
a sump pump in a basement has two battery-operated back-up pumps. in the case of power outage the main sump pump shuts
your love of golf has brought you back to the range as the new product manager for uniduns straight flight sf line of
Given that the test has a mean of 1000 and a standard deviation of 200 what is the lowest possible score needed for acceptance?
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