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1. You conduct a hypothesis test and you observe values for the sample mean and sample standard deviation when n=25 that do not lead to the rejection of the null hypothesis (the p value is .0667). If you observe the same sample mean and standard deviation for a new sample n>25, the p-value will___
a. increase b. decrease c. may either increase or decrease d. None of the above
2. In a one way ANOVA where the IV has 5 levels (groups), there are 10,12, 14, 11, and 9 subjects in each group. The degrees of freedom within are_______.
Under what circumstances should a nonparametric test be used? Explain. What are the strengths and weaknesses of nonparametric tests?
Using the 0.05 level of significance, is there evidence that the population mean is above $190? What is your answer in (a) if s = $50 and the 0.10 level of significance is used?
The lengths of 225 fish caught in Lake Michigan had a mean of 15.0 inches. Assume that the population standard deviation is 2.5 inches.
What critical value should the company officials use to determine the rejection region?
Eighteen (18) people in a department of 162 are fully trained in CPR and AED. A person shows signs of a heart attack. Five (5) people respond. What is the probability that NO (0) person who responded is trained to treat the victim? (Show all of yo..
Evaluate the area under the standard normal curve that lies to the left of z = - 3.49 and simple random sample of size
List 1 profession example for each probability type: empirical probability and theoretical (classical) probability. Explain clearly how these probabilities are used.
A study of elephants is conducted to determine the average weight of a certain subspecies of elephants. The standard deviation for the population is 500 pounds.
Two types of flares are tested for their burning times (in minutes) and sample results are given below.
A food processor is concerned that the 16 oz. can of sliced pineapple is being overfilled. The quality control department took a random sample of 50 cans and found that the arithmatic mean weight was 16.05 oz.
How large a sample should be taken if the desired margin of error E is:
Use Friedman test to find out whether there is evidence for significant difference between two population variance. Use .05 level of significance.
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