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A sample of 400 Regina households is selected and several variables are recorded. Which ofthe following statements is correct?
a) Total household income (in $) is interval level data.
b) Socioeconomic status (recorded as "low income", "middle income", or "high income"is nominal level data.
c) The number of people living in a household is a discrete variable.
d) The primary language spoken in the household is ordinal level data.
e) None of the above.
How would to solve this statistics question. In a gallop pill of 1,038 adults ,540 said that second-hand smoke is very harmful. What percentage of adults who said second-hand smoke is very harmful?
Do these scores suggest that the different foods are differentially preferred by people in general? (Use the .05 significance level.)
Write 1-2 paragraphs for each component of the model (days-to-repair; interval between breakdowns; lost revenue; putting it together).
For a certain coin, Q, is a uniform (0, 1) random variable. Given Q = q, each flip is heads with probability q, independent of any other flip. Suppose this coin is flipped n times. Let K denote the number of heads in n flips.
1. the daily flow rate of contaminant from an industrial plant is modeled by a normal random variable with a mean value
Find the margin of error for a 89% confidence interval for the true mean cost of textbooks of U of M students in one semester.
To begin with, I have an example problem that asks to find a complete solution for: y'+ 2xy = x. The text says to multiply both sides by e^int a(x) dx
At the .01 significance level, is there a difference in the use of the four entrances?
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Use the binomial distribution formula to calculate the probability that:
At a successful garage, there is always a backlog of cars waiting to be serviced. The service times of cars are iid exponential random variables with a mean service time of 30 minutes. Find the PMF of N(t), the number of cars serviced in the first..
Suppose that you want to compare the mean size of health care claims submitted by five groups of policyholders. Ten claims are randomly selected from amongst the existing claims for each of the five groups. The data is shown in the following table..
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