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The closing stock price for each of two stocks was recorded over a 12-month period. The closing price for the Dow Jones Industrial Average (DJIA) was also recorded over this same time period. These values are shown in the following table:
(a) Develop a regression model to predict the price of stock 1 based on the Dow Jones Industrial Average.
(b) Develop a regression model to predict the price of stock 2 based on the Dow Jones Industrial Average.
(c) Which of the two stocks is most highly correlated to the Dow Jones Industrial Average over this timeperiod?
Draw a normal probability plot for residuals using excel or Minitab. Do the residuals seem normally distributed? If yes, why?
The χ 2 statistic from a contingency table with 6 rows and five columns will have:
The average salary for graduates entering the actuarial field is $40,000. If the salaries are normally distributed with a standard deviation of $5,000, find the probability that
Determine equation in point-intercept form for line that goes through points (8,-1) and (4,3).
What is the 95% confidence interval for the true mean length of the bolt?
The boys with certificates of recognition. What time would the boys need to beat in order to earn a certificate of recognition from the fitness association?
Does this sample indicate that the insurance company should change its premiums because life expectancy has increased?
These predictions, however, are not very accurate. Discuss at least three reasons why these predictions may not be accurate and offer three ways in which you can increase the likelihood of accurately predicting your customers' purchases.
Sample from a normal population having a standard deviation of 0.04, what is the probability that the mean of a random sample of size 25 will be "off" by at most 0.02.
In the Willow Brook National Bank waiting line system (see Problem 1), assume that the service times for the drive-up teller follow an exponential probability distribution with a service rate of 36 customers per hour or 0.6 customer per minute.
A rectangular field has to be formed with a given total fence length of P meter of fence material. Find the dimensions of the rectangle which will maximize the fenced area.
Car X used k gallons of gas while traveling p miles, and car Y used s gallons of gas while traveling r miles. What was the ratio of the number of miles per gallon for car X to the number of miles per gallon for the car Y?
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