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A veterinary nutritionist developed a diet for overweight dogs. The total volume of food consumed remains the same, but one-half of the dog food is replaced with a low-calorie "filler" such as canned green beans. Six overweight dogs were randomly selected from her practice and were put on this program. Their initial weights were recorded, an then they were weighed again after 4 weeks. At the 0.05 level of significance can it be concluded that the dogs lost weight?
Before 42 53 48 65 40 52After 39 45 40 58 42 47
Assume that all variables are normally or approximately normally distributed and:1. state the hypotheses2. find the critical value(s)3. compute the test value4. make the decision5. summarize the results
Develop a 99 percent confidence interval for the population proportion.
Find out coefficient of correlation between variables. Interpret the value.
Which of these statements is NOT true about CPM and PERT?
The probability of getting a promotion and a raise is 0.25. What is the probability of getting a raise.
What is the probability that the kickoff will go between 60 and 75 yards if the average kickoff is 50 yards with a variance of 49?
Expand and aggregate plan using each of the following guidelines and complete the total cost for each plan. Which plan has the lowest total cost.
Given the standardized normal distribution (with a mean of 0 and a standard deviation of 1, as in Table E.2), what is the probability that:
Four components of a time series are secular trend, cyclical variation, seasonal variation, and irregular variation (Lind, 2005). Briefly describe each of these components and provide a real-world example of one component.
Find a 90% confidence interval on the difference in the mean number of production units for the two shifts.
The Executive Camera Company provides full expenses for its sales force. When attempting to budget automobile expenses for its employees, the financial department uses mileage figures to estimate gas, tire, and repair expenses.
In a certain countrywide school district, a survey of 350 students showed that 28% carried their lunches to school. Find the 95% confidence interval of the true proportion of students who carried their lunches to school.
Calculate (a) MAD, (b) MSE, and (c) MAPE for the following forecast versus actual sales figures.
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