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Question: Choose at least one uncertain quantity of interest to you. For example, you might choose the highest price of gas between now and the end of the year, the highest point the Dow Jones Industrial Average will reach between now and the end of the year, the number of majors Tiger Woods will win in his career, and so on. Using all of the information and insight you have, assess the probability distribution of this uncertain quantity. Is there one "right answer"?
Create a stem-and-leaf plot for these ages.- Create a dotplot for these ages.- Describe the shape of this dataset.
A recent study of 75 workers found that 53 people rode the bus to work each day. Find the 95 percent confidence interval of the proportion of all workers who rode the bus to work.
a) What is the value of the sample proportion p? b) What is the standard error of the sample proportion?
Test at 5% and 1% whether the molder is operating satisfactorily.
A bank wants to get new customers for their credit card. They try two different approaches in their marketing campaign. The first promises a "cash back" reward; the second promises low interest rates. A sample of 500 people are mailed the first br..
Suppose that highway gas mileage rates for both of these cares are uniformly distributed over a range of from 20 to 30 mpg. What proportion of these cars would fall into the 22 to 27 mpg range? Compute the proportion of cars that get more than..
A senior psychology major performed the same experiment on three groups and obtained means of 74, 69, and 75 percent correct. The groups consisted of 12, 31, and 17 participants, respectively. What is the overall mean for all participants?
If the office purchased 10,000 thermometer covers this year, what is the price variance - What should budgeted labor for the month be?
How many of this younger age group must we survey in order to estimate the proportion of non-grads to within 6% with 90% confidence?
Use the data in table 1 to find the MSE and the RMS error for the regression line predicting length from weight. Which statistic gives abetter sense of how far the data are from the regression line? Hint: keep track of the units, or plot the data,..
Develop a regression model that would predict the DJIA based on the S&P 500 index. Based on this model, what would you expect the DJIA to be when the S&P is 1,100? What is the correlation coefficient (r) between the twomarkets?
Make an appropriate display of these data.- Does a person's age seem to affect their response to the question about nibbling?
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