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Canada has two official languages, English and French. Choose a Canadian at random and ask, "What is your mother tongue?" Here is the distribution of responses, combining many separate languages from the broad Asian/Pacific region:
Language English French Asian/Pacific OtherProbability 0.63 0.22 0.06 ?
What probability should replace "?" in the distribution?
(A) At the 0.05 level of significance, use the six step critical value approach to hypothesis testing to try and prove that the 2004 proportion has increased. (B) Use the 5 step p-value approach. Interpret the meaning of the p value.
If you were going to use multiple regression to develop an appraisal model, what other quantitative variables might be included in the model?
The probability that a business owner will go bankrupt in it first year is .34. For 25 like businesses, find the probability first by using the binomial probability formula, and then by using the normal approximation.
Conduct a two-tailed hypothesis test given the information below. Assuming that the population variances are equal for male and female Grade Point Averages (GPAs), use the following sample data to test.
A group of three students is to be randomly selected froma group of 1 freshman, 1 sophomore, 3 juniors and 3 seniors. Let Y1 and Y2 denote the number of juniors and seniors, a) What is the joint probability distribution for Y1 and Y2?
A state education agency designs and administers high school proficiency exams. Historically, time to complete the exam was an average of 120 minutes.
The distribution of lifetimes for a certain type of light bulb is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Find the 33rd percentile of the distribution of lifetimes.
Compute an exponential smoothing forecast with a =.20, an adjusted exponential smoothing forecast with a = .20 and B =.20 and a linear forecast. Compare the three forecast, using MAD and average error (E) and indicate which seem to be most accurat..
Conduct a mini-meta-analysis. There is really no such thing as a mini-meta-analysis, but you don't have time to conduct a full meta-analysis.
If possible, determine a 95% confidence interval for average number of television sets in all 50,000 households. If this is not possible, describe why not.
In this paper present the Construction of confidence Intervals and the Proper Interpretation of confidence Intervals and show appropriate examples in the education environment.
Research question : At α = . 01, is degree of certainty independent of credits earned?
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