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Question - Predicting movie revenue: simple linear regressions. Now let's look at the response variable and its relationship with each explanatory variable.
(a) Using numerical and graphical summaries, describe the distribution of the response variable, USRevenue.
(b) This variable is not Normally distributed. Does this violate one of our key model assumptions? Explain.
(c) Generate scatterplots of each explanatory variable and USRevenue. Do all these relationships look linear? Explain what you see.
The standard deviation was $6050. Is there evidence at the 1% significance level that the cost of attendance has increased? State the hypothesis?
What would be a good example of a null and alternative hypotheses for a decision relevant in life? What Type I and Type II errors could occur with your decision-making process?
1. correlation concerns the relationship between the values of variables. regression analysis determines the nature of
Listed below is the selling price for a share of Coca Cola, at the close of the year. Determine the least squares trend equation.
what are the assumptions necessary for hypothesis testing when using the method of least square in multiple regression?
For a particular plant hybrid, the flowers of any given plant have a 75% chance of being red. (a) What is the probability that in 8 plants, exactly 6 have red flowers? Use your formula sheet and basic calculator functions only.
Determine the 95% prediction interval for the overall rating of an individual notebook computer with a $1000 street price, a performance score of 100, and a 2.50-hour battery life.
Bimodal distribution with a very large standard deviation for the population. For most teachers such a distribution makes the matter of how to teach very tricky.
Eighty percent of the time, it takes more than how many minutes to find a parking space? (Round your answer to two decimal places.)
The unit shipping costs (dollars per box) for the four products are $5, $2, $4, and $10, respectively. What is the weighted mean for shipping cost per unit?
Estimate the mean age of cars driven by students at your college. Use the range rule of thumb to make a rough estimate of the standard deviation of the ages of cars driven by students at your college.
How large random sample of potential voters will be required to evaluate result with 95% confidence and with margin of error of plus and minus 3%?
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