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In traditional marketing research surveys, are purchase intent questions measured on a 5 point scale (e.g. definitely would buy, probably would be, etc), considered to be ordinal or interval data, and as such should we use parametric tests (t) or non-parametric tests (chi squared) to analyze the results? I assume the answer is the same for other attitudinal ratings, such as uniqueness, etc?
Assume that the number of left-handers is a binomial random variable. (Refer to the formula for mean and standard deviation for binomial prob. Distribution)
Find the standard error of the mean Also establish an interval estimate around the sample mean using one standard deviation of the mean.
What is the degree of correlation between the dependent variable and the independent variable? Is the statistical significance of the model as a whole less than the desired statistical significance for the regression model? Explain the basis for yo..
Critically discuss why you would or would not expect each of the following variables to be normally distributed.
Why might normality be an issue here? (c) What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence? (d) If this is not a reasonable requirement, suggest one that is.
Use population distribution to determine expected juror frequencies. Test researcher's claim at a = 0.01.
Which two types of probability sampling are best suited for business research and statistical data analysis, and why?
What percent of the sales representatives earn more than $42,000 per year? What percent of the sales representatives earn between $32,000 and $42,000?
Using the following information, find the equation of the regression line, and predict the heart rate when 0.27 milligrams of the drug is used.
If the probability that it will rain tomorrow is 0.33, then what is the probability that it will not rain tomorrow?
Draw the standard normal distribution, label the axis, locate both z-scores on the axis (z7 = -1.5, z15 = 2.5), and shade an area equal to the probability that a randomly chosen croaker fish will be b/t 7 and 15 inches.
Change the frequencies to percentages - is there a group more likely to get high salaries.
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