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From a practical point of view, what is the difference between the frequency distribution and relative frequency distribution? Why is a cumulative relative frequency distribution so much more informative that just the relative frequency distribution? Use examples to describe these differences.
Can college conclude that students in new program are significantly different from rest of freshmen class? Use two - tailed test with a = 0.05.
Which is the probability of that the median of the sample or average medians be between 320 and 350 minutes?
To determine if this is evidence that students perform worse under uncomfortable conditions, The P-value of a test
A school tracks the absences of pupils as part of a flu surveillance system. Regular reporting of absences among 25 students in grade 1 are taken, and based on these data, the long-run proportion of absences under normal conditions is estimated to..
This is called a one-time fling. About 10% of all adults deliberately do a opne-time fling and feel no guilt about it!
Which of these variables are discrete and which are continuous random variables?
If all samples of size 64 are drawn, mean of sample according to Central Limit Theorem is 100.
Determine the calculated value of the test statistic? What distribution does test statistic have when null hypothesis is true?
Find a 95% confidence interval for the difference in the proportion of deaths between the streptokinase and the control group.
If there is an outage, there is a .05 probability that the resulting losses will be very large, approximately $ 80 million in lost earnings. Also, it is estimated that there is a .95 probability of only slight losses of around $ 1 million. What is..
An advantage of the permutation test over the t test for a difference in means, can Permutation tests be used for tests when we believe the two populations differ under the null hypothesis.
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
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