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The primary difference between an ordinal level and inteval level variable is:
A. an ordinal level variable has a meaningful zero point while the inteval level variable has no zero point
B. an interval level variable has an assumed equal distance between values while an ordinal level only displays an odered list
C. an interval level variable and an ordinal level variable can be considered the same except that an interval level variable has a meaningful zero point
Given that SAT test scores are normally distributed with a mean of 1000 and a standard deviation of 200, what is the lowest possible score a student needs to qualify for acceptance into the university?
Identify the scale of measurement in each of the following:
Can you describe in detail the differences in ANOVA and the five-step hypothesis testing method?
The manager requires the estimate to be within 1.0 minutes of the population value. What sample size is needed?
An advertising agency that serves a major radio station wants estimate the mean amount of time that the station's audience spends listening to the radio daily.
There is uneasiness that the users of paper coupons are different from the users of e-coupons (coupons disseminated by means of the Internet).
Mr. Connors philosophy class has 99 students, classified by academic year and gender, as illustrated in the table below. Mr. Connor randomly chooses one student to collect yesterday's work. What is the probability that he selects a male, given tha..
Perform an exponential smoothing forecast with α=0.3 with the following data. Use the demand for the month of January for the initial forecast.
In studying the performance of the comapany's stock investments over the past year, the research manager of a mutual fund company finds that only 43% of the stocks returned more than the rate that had been expected at the beginning of the year.
A developmental psychologist is studying memory development in children. He is interested in determining the exact age at which children began to recall long-term episodic memories.
Develop 3 regression models to forecast selling price based upon each of other factors individually. Which of these is best?
Incomes in the thousands of dollars were sampled in one region, they are as follows (1.5, 3.0, 4.2, 5.6, 2.6, 4.1, 0.9, 5.7, 5.4, 2.6) Assume the population is normal.
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