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Discuss the concept of statistical significance, including your understanding of what it means, why it is important, and how it can be used.
A researcher has a series of Likert-scale items and a measure of frequency of absenteeism. He uses each of the Likert-scaled items in a separate bivariate correlation with absenteeism without testing for the assumptions of linear relationships. Is th..
Then describe trade-offs which will happen when you lower sample to $10,000 to meet their budget.
Explain why a confidence interval for a predictor coefficient is equivalent to a 2-tailed test of significance?
200 people were surveyed and asked to rate mayor Michael Bloombergs effectiveness towards education. The rate scale is 1 (lowest) to 10 (highest). Mayor Bloomberg's average rating was 7.50, with a standard deviation of 2
Depends on the satellite information illustrate what is the expected number µ of real forest fires on the Seward Peninsula.
Calculate a 92% confidence interval for the mean density of quartz porphyry, given that 75 samples yield mean of 2.62 grams per cubic centimeter
In a random sample of 150 sports cars, 60 failed emissions on the first pass. Is there sufficient evidence to indicate that the percentage of first failure for sports cars is higher than the percentage for all passenger cars?
a) yes, because the tst value -3.46 falls in the noncritical region. b) no, because the test value -1.98 falls in the critical region. c) yes, becasue the test value -3.46 falls in the critical region. d) no because the tst value -1.98 falls in the n..
A random sample of 25 injections resulted in a variance of 0.135 test if the apparatus has a greater variance than the desired one.
If there are 500 students in the school, what is the probability that everyone will pass the exam
Inventory manager for Itex received wheels bearing from Wheel - Rite a small producer of metal parts , Unfortunately , Wheel -rite can only produce 500 wheel bearings from wheel rite each year.
what is the required sample size is the error is to be less than 1/2 hour with a 95% level of confidence?
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