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Assuming that the population is normally distributed, construct a 95% confidence interval estimate for the population mean for each of the following samples: Sample A: 1 1 1 1 8 8 8 8. Sample B: 1 2 3 4 5 6 7 8. Explain why these two samples produce different confident intervals even though they have the same mean and range.
In tests of a speed-reading course, it is found that 10 subjects increased their reading speed by an average of 200 words per minute, with a standard deviation of 75 words. At the 0.10 level, does this sample information suggest that the cours..
suppose you have a normal distribution of values with a mean of 70 and a standard deviation of 4.5. find the
The data on the daily consumption of fuel by a delivery truck, in gallons, recorded during 25 randomly selected working days, are as follows:
Solve different inventory control problems using an appropriate OR method.
for the following data xy806144364651sketch a scatterplot to show the relationship between x and y. what does the
Using one mean t test to determine whether or not to support the claim - hypothesis test that WORKS THE SAME as the z-test
Is it harder to get into graduate programs in psychology or history? We randomly selected five institutions from among all U.S. institutions with graduate programs.
Mean = 14.2, s² = 5.92 and sum of X squared EX² = 2941.60. What can be concluded about age differences in problem solving ability?
for the independent-measures t statistic if other factors are held constant increasing sample variance will the
a random sample of size 100 is drawn from a population with population proportion 0.70. find the probability that the
what does the multiple standard error of estimate measure? select one a. change in 1for a change in x1 b. the error or
a committee of 2 is chosen at random from a population of 7 men and 8 women. what is the probability that the committee
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