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An English professor would like to test the relationship between an English grade and the number of hours per week a student reads. A survey of 500 students resulted in the following frequency distribution.
For a sample of students in the college of business administration at mid-atlantic university, the mean grade point average is 3.10 with a standard deviation of 0.25.
From a random sample we know that the average duration of unemployment in a low developed region A is 147 days (with standard deviation sA = 32 days and nA = 230 unemployed).
Calculate and interpret the effect size for this test and calculate and interpret any post-hoc test if necessary - Conduct all 6 steps of an independent-samples t test. Be sure to label all six steps
there is an issue with treatment side effects individuals with a certain variant of the fictitous cehs gene suffer
a cola dispensing machine is set to dispense 9 oz. of cola per cup with a standard deviation of 1 oz. the manufacturer
What is the probability that the sample mean will be greater than M = 510. In symbols, what is p (M>510)?
Test the appropriate hypothesis by comparing with a critical value using o: = 0.05, and explain what your results mean. Compute the p-value for the test in part (a) and use it to perform the hypothesis test.
a recent study of how americans get to work revealed the following dataurbanruraltotalautomobile400200600public
a two-stage clinical trial is planned for for testing h0 p0.10 versus ha pgt0.10 where p is the proportion of
Determine probability of generating six digits and getting code consisting of 1, 2, 3, ..., 6 if each digit can be repeated?
An entomologist is studying the effect of a chemical sex attractant (pheromone) on insects. Several insects are released at a site equidistant from the pheromone under study and a control substance.
a multiple choice exam has 10 questions. each question has 4 possible answers of which one is correct. a student
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