Fowle Marketing Research, Inc., bases charges to a client on the assumption that telephone surveys can be completed in a mean time of 15 minutes or less. If a longer mean survey time is necessary, a premium rate is charged. Suppose a sample of 35 surveys produces the data in the Microsoft Excel Online file below. Use a known σ = 3.6 minutes. Is the premium rate justified?
One of the reasons health care costs have been rising rapidly in recent years is the increasing cost of malpractice insurance for physicians. Also, fear of being sued causes doctors to run more precautionary tests (possibly unnecessary) just to make sure they are not guilty of missing something. These precautionary tests also add to health care costs. Data in the Excel Online file provided below are consistent with findings in the Reader's Digest article and can be used to estimate the proportion of physicians over the age of 55 who have been sued at least once. Construct a spreadsheet to answer the following questions.
a. Formulate hypotheses that can be used to see if these data can support a finding that more than half of physicians over the age of 55 have been sued at least once.
<>≤≥=≠ 0.50 <>≤≥=≠ 0.50
b. Use the Excel Online file provided above to compute the sample proportion of physicians over the age of 55 who have been sued at least once (to 2 decimals).
Calculate the value of the test statistic (to 2 decimals).
What is the -value (to 4 decimal places)? Do not round intermediate calculations.
c. At , what is your conclusion?
≤> , we rejectfail to reject . We conclude that we have sufficientinsufficient evidence to suggest that the proportion of physicians over the age of 55 who have been sued at least once is greater than .50.
|Hours Spent in Child Care||Formulas|
|11.8||Sample Mean (1 decimal)||ERROR:#N/A|
|5.7||Sample Standard Deviation (4 decimals)||ERROR:#N/A|
|3.2||Test Statistic (2 decimals)||ERROR:#N/A|
|5.9||Degrees of Freedom||ERROR:#N/A|
|10.9||p-value (4 decimals)||ERROR:#N/A|
We are a professional custom writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework.
Yes. We have posted over our previous orders to display our experience. Since we have done this question before, we can also do it for you. To make sure we do it perfectly, please fill our Order Form. Filling the order form correctly will assist our team in referencing, specifications and future communication.
2. Fill in your paper’s requirements in the "PAPER INFORMATION" section and click “PRICE CALCULATION” at the bottom to calculate your order price.
3. Fill in your paper’s academic level, deadline and the required number of pages from the drop-down menus.
4. Click “FINAL STEP” to enter your registration details and get an account with us for record keeping and then, click on “PROCEED TO CHECKOUT” at the bottom of the page.
5. From there, the payment sections will show, follow the guided payment process and your order will be available for our writing team to work on it.