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Sample 1: n1=56, sumation xi,1=5,142, sumation x squared i,1=473,896sample 2: n2=27, sumation xi,2=2,415, sumation x sq. i,2=216,387Sample are independent from Normal populations with equal variances
a.Can you conclude that u1 is not equal to u2 at alpha=.05? State the hypothesis in orders of 1-2
b. construct a 99% confidence interval for the difference in true means. State the confidence interval in terms of 2-1
For the following population of N=10 scores 14,6,8,3,9,12,1,6. Draw the histogram showing population distribution. Locate value of population mean in your sketch and make estimate of standard deviation.
A shoe salesman want to see if his female customers have a preference in the color of shoe purchased. What is the test value for the following data?
What is the best estimate of the average tread life in miles for the entire population of these tires?
For this assignment employ the data below which was taken from the previous online class. Find out if the data is qualitative or quantitative, continuous or discrete, and determine the level of measurement.
A study is conducted to compare mean cholesterol levels for individuals following a low carbohydrate diet for at least 6 months to individuals following a conventional (low fat, low calorie )diet for at least 6 months.
At the .05 significance level, is there a difference in the proportion of viewers watching the three channels?
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Although the phenomnenon is not well understood, it appears that people born during the winter months are slightly more likely to develop schizophrenia than people born at other times.
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Calculate the expected number of days it takes to get the order and standard deviation.
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