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You have learned some of the basic terminology of statistics. Please propose a study and write a description of the study no more than two pages. Below is a tentative guideline for the paper.
a. Write the research question
b. What is the response (dependent) variable
c. What is the explanatory (independent) variable(s)
d. Identify the population
e. Identify the sample
f. How are you going to collect the data?
g. Describe the sampling technique that you would use.
h. How are you going to present the data?
A normal distribution with mean value 110 and standard deviation 15. Approximate the probabilities below. (Round all answers to four decimal places.)
a student takes a 16 question multiple test with five choices for each question and guesses on each question. find the
A screening test is used in the same way in two similar populations, but the proportion of false-positive results among those who test positive in population A is lower than that among those who test positive in population B.
400 people are chosen from a large population that is 50% women. How likely is it that the sample has only 180 women or fewer? What is the value of the test statistic z?
What is the research hypothesis? Should you conduct a one-or two tailed test? Why?
The Starbucks in the Bauer College of Business found that 24% of customers purchase more than one cup of coffee per day from their shop. If 180 customers are randomly selected one day, what is the probability that no less than 25% of them purchase..
Suppose you roll a standard die 2000 times and let X be the sum of the values you get. Using the Central Limit Theorem, for what value of a is P[X >= a] approximately equal to P[N(0,1) >= 2] ?
you are in charge of resucing the water consumption in a dormitory at a university and thus have been charged with
What is the lowest raw score that a client must have on Anxiety Scale A in order to be admitted into this new group? Also assuming some clinics use Anxiety Scale B and often refer their clients to Mary, what is the cutoff point (lowest raw score) ..
Use normal approximation to determine probability that x = 2. Illustrate all work.
Assume H- to be true. What is the probability that this decision strategy will result in a type I error. Sketch the sampling distribution and put in the region of rejection?
One of the major measures of the quality of service provided by any organization is the speed with which responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a major ..
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