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A survey of Ohio University students was conducted to determine if there was a particular Green that was desired by students to live on. A sample of students responses are reproduced below. Do students prefer a particular Green? Use critical value = 5.99.
A case-control study of relationship between liver cirrhosis among both non alcoholics and alcoholics. Describe whether smoking is confounder.
How many ounces should they advertise on the box if they want to be sure that no more than 0.5% of the boxes are filled less than that advertised amount?
Compute the probability of exactly 0,1,2,3,4, and 5 arrivals per day.
If standard deviation is 50 hours and α is equal to 0.01, what values for mean x will result in rejection of null hypothesis.
Test at 5% and 1% whether the molder is operating satisfactorily.
Testing for population mean - warp-breaking specification of the manufacturer at the .05 level of significance?
He measures the heights of 25 men from this century and finds the mean and standard deviation for his sample.
Assume that the length X in minutes of a regular season NBA game is normally Distributed with X~N (µ X , σ 2 X );
Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.
A nutritionist conducted an experiment on memory for dreams. She wanted to test whether it really was true that eating cheese before going to bed made you have bad dreams. Over three nights, the nutritionist fed people different foods before bed.
Determine the mean and standard deviation for number of actual voters in groups of 1002.
Carry out F test for significance of straight line regression of Y on X and interpret your results.
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