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A researcher uses analysis of variance to test for mean differences among four treatments with a sample of n = 8 in each treatment. The F-ratio for this analysis would have what df values?
Average number of mosquitoes in pond is 80 per square meter with a standard deviation of 12. If 16 square meters are choses at random for a mosquiot count, find probabilty that the average of those counts is more than 83.0 mosquitoes per square me..
determine the area under the standard normal curve that lies bewteen a z -2.23 and z 2.23 b z -2.59 and z 0 and c z
Using a previous exercise about Hallux abducto valgus (HAV) (deformation of the big toe that often requires surgery). Doctors used x-rays to measure the angle (in degrees) of deformity in 38 consecutive patients under the age 21 who came to a medi..
Mean output of solar cells of three types are measured six times under random light intensity over a period of 5 minutes, yielding the results shown. Research Question: Is the mean solar cell output the same for all cell types?
the reading speed of second grade students in large city is approximately normal with a mean on 90 words per minute and
Test the null hypothesis that these Arizona students scored the same as the North Dakota students. (238 North Dakota students had a mean of 525)What t-statistic do you obtain?
In a school how is ztest used in time table ... one group that studies 7 periods a day of 45 mins each class and the other group can choose semester wise classes and their time period is 90 mins
a researcher knows that the population mean among college students taking social conformity test is neutral100. scores
Calculate the test statistic, and interpret the result, calculate the p-value, and interpret the result and determine the rejection and non-rejection regions.
when is it appropriate to use an anova? what is the key piece of information you must know in order to
What is the distinction between a one-sided and a two-sided hypothesis test in this problem?
we wish to test the null hypothesis the average amount of fat content in all single servings of vivolis hazelnut gelati
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