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The American Veterinary Assoication claims that the annual cost of medical care for dogs in the US averages $100 with a standard deviation of $30. The annual cost for cats is reported to be $120 with a standard deviation of $40. You may assume that veterinary costs for dogs and cats are independent, and that both are normally distributed.
(a) What is the probability that a dog owner will spend more than $130 on medical care in a given year?(b) What is the prbability that a cat owner will spend $160 or more on medical care in a given year?(c) Compare your answers for (1a) and (1b). Explain what you notice.(d) What is the probability that a dog owner will spend less than $80 on medical care in a given year?(e) What is the probability a dog owner will spend between $80 and $130 on medical care in a given year?(f) Your friend owns a cat and a dog. What is the probability that she spends more on medical care for her dog than for her cat in a given year?
The distance (in miles) are as follows:32,18,44,29,25,38,14,21,and 12. Estimate the mean commute distance of all employees of the company.
Smith bicycled 45 miles going east from Durango, and Jones bicycled 70 miles. Jones averaged 5 miles per hour more than Smith, and his trip took one-half hour longer than Smith's. How fast was each one traveling?
Report the test statistic and p-value. What is your decision and conclusion? State any assumptions you have made. Are these assumptions satisfied with these data?
A four-year university has decided to implement new approach to teaching Statistics. Full-time and adjunct professors were surveyed to determine whether they preferred the traditional lecture approach or a computer approach to teaching Statistics.
People in a large population average 60 inches tall. You take a random sample and will be given a dollar for each person in your sample who is over 65 inches tall.
Two strategies over the 6-year period. Create a histogram of the final fund values. Based on your simulation results, which of the two strategies would you recommend? Why?
What is approximately the largest sample mean of another sample of n= 16 participants you would expect to obtain from this finite population?
A tire company test a particular model of tire and found the tires to be normally distributed with respect to wear. The mean was 28,000 miles and the standard deviation was 2500 miles. If 2000 tires are tested, about how many are likely to wear ou..
Compute a 99% confidence interval for the true average number of months taken by bankruptcy petitioners to acquire debts listed on their petitions.
A teacher divides her class into two groups. One group is taught a lesson on the computer and the other is taught by traditional lecture. The teacher then gives a test to see that group has better grades.
Probability the second truck is available is .50, and the probability that both trucks are available is .30. What is the probability neither truck is available?
Find out point estimate and 95% confidence interval for mean family dental expenses of all employees of company.
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