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Assume that womens heights are normally distributed with a mean given by u=62.3in and a standard deviation given by Standard deviation = 2.7 in
a. If 1 woman is randomly selected, find the probability that her height is less than 63in
b. If 31 women are randomly selected, find the probabilty that they have a mean height less than 63 in
There is concern about the percent of on-time flights. A recent survey of two major airlines yielded the following results. At α = 0.05 test the claim that there is a difference in proportions of on-time flights.
Suppose we select a sample of 40 tires and use a simulator to determine the tread life. What is the likelihood of finding that the sample mean is between 59,050 and 60,950?
Commonwealth Edison wants to identify its heaviest users, which are those that are in the top 6% of electric consumption. How many kilowatt hours in January would qualify for the heavy user classification?
To avoid losing money, the top 5% (the heaviest 5%) is labeled overweight. A) What proportion of boxes is underweight?
The probability of a bulb lasting less than 2300 is .1573. The maximum probability of a bulb lasting less than 2300 hours should be only 5%. What must change specifically? How would that change be obtained practically?
the life in hours of a laser is known to be normally distributed with a standard deviation of sigma 20 hours. a sample
there are a lot of symbols so i am sorry if this is hard to read.qtheta hat qthetasuppose eq1eq2q. vq1sigma12
When would you use a two population test with a small sample size at your place of employment, in your education, or in politics?
Set up hypotheses and carry out all relevant tests. Describe all results and implications which you have discovered.
what stats test would i run for this rq and hq1 how does the cultural typology of nursing programs correlate with
Calculate correlation coefficient for data below. Compute the equation for regression line if n=7, Ex=69, Ey=528 Exy=4754 and Ex^2=825
Forecast 2 out of sample forecasts for the final model using following data: Final Estimates of Parameters AR 1 0.9647 0.0388 24.84 0.000.
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