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In a hypothesis test, we use a sample to gain insight on what is likely the outcome for the population. In your example, that is a probability of 1 out of 20 as there were 20 people in the class. A hypothesis test might test the idea that if individuals had an extra million dollars, 20% would give that money to charity. We could then test among a sample what they would do with the money and see if 20% of the sample said give it to charity.
The reason why we finish our calculation by dividing range by 4 is that in most data sets 95% of the data values fall within two standard deviations of the mean.
A central university has a student population of 60,000. The university is interested in determining what proportion of them is in favour of a new grading system.
What is the probability a random families bill is more than $550 25.12% 74.86% 15.26% 24.86 %?
Calculate the per-phase electromotive force and the torque angle of a deltaconnected 50-kVA, 400-V synchronous generator, delivering its rated current to a load having 0.85 power factor (lagging). The perphase synchronous reactance and resistance ..
What is the average number of times per month people exercised before and after a 3-hour exercise orientation program?
According to the U. S. Census Bureau, the total 2008 U.S. population was 303,824,640. The chart below summarizes the 2008 population for five U.S. States.
Henry performed a two-tailed test for an experiment in which N = 24. He could not find his table of t critical values, but he remembered the tcv at df = 13. He decided to complete his obt.with this tcv. Is he more likely to make a type I or II err..
Find a 99% confidence interval for the population mean annual number of reported larceny cases in such communities. What is the margin of error? (Round your answers to one decimal place.)
1.a researcher is interested in comparing sat scores for students enrolled in public schools private schools and those
Suppese X is a discrete random variable taking four values : x1, x2, r3 and x4, and Y is a discrete random variable taking two values: y1 and y2.
What is the probability of getting a sample mean larger than $135 per hour? What is the probability of getting a sample mean of between $120 and $130 per hour?
question describing data measures of central tendencynbspnbspnbspnbspnbspnbspnbspnbsp number of days from order date to
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