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1. Distinguish between the null hypothesis and the research hypothesis. When does the researcher decide to reject the null hypothesis?
2. What factors are most important in determining whether obtained results will be significant?
Many educators feel their grades should fit a normal distribution and often apply curves to make them fit one. One way to do this is to convert numeric grades to z scores using the mean and standard deviation for the grades, then use an equation s..
the number of viewers of american idol has a mean of 29 million with a standard deviation of 10 million. assume this
Births with gestation time of 258 days or less are regarded to be premature births. Determine the probability that randomly selected pregnant woman will give birth to premature baby?
Estimated the probability that among 75 randomly selected students, at least 20 of them score greater than 78.
The Wilcoxon signed rank test is computed for the data and gives a value W + = 161.5. Using the Normal approximation (without the continuity correction) the P-value.
A loan application is received this morning. What is the probability that:
From the notes of Schroder, Bernd. The Binomial Distribution, Retrieved from; http://www2.latech.edu/~schroder/slides/stat/binom_dist.pdf we have a clear idea what are a binomial distribution and few real life examples
for women age 25-34 with full-time jobs the average income in 2004 was 32000 and the sd for income was 26000. assuming
You have just started your own Airline. You have one plane for a route connecting Austin, Boise, and Chicago. One route is Austin-Boise-Chicago and a second route is Chicago-Boise-Austin. How many other routes are possible?
What is the probability that the interpupillary distance for a randomly selected male will be between 64 and 67 mm and What is the standard deviation of the sample mean
One of the most famous labor/management conflicts took place in the 1902 Coal Strike in Pennsylvania. The strike brought the coalmine owner George Baer against the United Mine Workers Union, and led Theodore Roosevelt to sponsor government interve..
a basket of eggs contains 18 eggs 7 of which are cracked. if we randomly select 8 of the eggs for hard boiling what is
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