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Ableson's anthropology professor announced that the poorest exam grade for each student would be dropped. Ableson scored 79 on the first anthropology exam. The mean was 67 and the standard deviation 4. On the second exam, he made 125.
The class mean was 105 and the standard deviation 15. On the third exam, the mean was 45 and the standard deviation 3. Ableson got 51. Which test should be dropped?
the monthly growth of the height of trees in montana has a mean of 47.5 and a standard deviation of 11.6. assume a
1. a survey was conducted to measure the height of men. in the survey respondents were grouped by age. in the 20-29 age
a psychologist is interested in the mean iq score of a given group of children. it is known that the iq scores of the
If 23 percent of all patients with high blood pressure have bad side effects from a certain kind of medicine, use the normal approximation to find the probability that among 120 patients with high blood pressure treated with this medicine more tha..
Find that the mean weight in the sample is 308 pounds.The standard deviation is 23. Using significance level of .01 test the null hypothesis using 5-step procedure.
Is there enough evidence to support the consumers conjecture at a=0.05. First, indentify the alternative and the null hypotheses.
the study obtained a measure to determine how comfortable the shopper was in a store. Higher scores indicated greater comfort. Suppose the following data were collected. Use a = .05 to test for differences among comfort levels for three types of b..
a recent study focused on the amount of money single men and single women save monthly. the information is summarized
Assume that the duration of human pregnancies can be described by a normal model with mean 268 days and standard deviation 17 days. What percentage of pregnancies should last between 260 and 270 days?
Determine whether the following equations have a solution or not? Justify your answer. What type of solution do you get for quadratic equations where D
realturf is considering purchasing an automatic sprinkler system for its sod farm by borrowing the entire 35000
x and y are independent. both x and y have an exponential distribution. if x had mean 3 and y had mean -2a find the
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