Read the following problem. In your dropbox submission, please include the following information:
a. Determine if the problem is either a test of hypothesis, a confidence interval or something else and specify the 'key words' found in the problem that demonstrate your choice.
b. Determine the procedure name and parameters involved for each problem (use the Stat 200 Formulas and Techniques Summary document.) Specify the 'key words' found in the problem that lead you to this choice.
c. If the problem is a hypothesis test, indicated if it has a lower-tail, upper-tail, or two-tail alternative hypothesis as well as the test statistic formula for the test. If the problem is a confidence interval then indicate the formula used for the margin of error.
You DO NOT need to do the ACTUAL test of hypothesis, confidence interval, etc. in order to submit, just answer parts a, b and c of the problem.
4. A study is to be made of the relative effectiveness of two kinds of cough medicines in increasing sleep. Six people with colds are given medicine A the first night and medicine B the second night. Their hours of sleep each night are recorded.
Subject
1 2 3 4 5 6
Medicine A 4.8 4.1 5.8 4.9 5.3 7.4
Medicine B 3.9 4.2 5.0 4.2 5.4 7.0
Is there a significant difference in the amount of sleep when switching from medicine A to medicine B at the 5% significance level?
Directions: Read the following problem. In your dropbox submission, please include the following information:
a. Determine if the problem is either a test of hypothesis, a confidence interval or something else and specify the 'key words' found in the problem that demonstrate your choice.
b. Determine the procedure name and parameters involved for each problem (use the Stat 200 Formulas and Techniques Summary document.) Specify the 'key words' found in the problem that lead you to this choice.
c. If the problem is a hypothesis test, indicated if it has a lower-tail, upper-tail, or two-tail alternative hypothesis as well as the test statistic formula for the test. If the problem is a confidence interval then indicate the formula used for the margin of error.
You DO NOT need to do the ACTUAL test of hypothesis, confidence interval, etc. in order to submit, just answer parts a, b and c for the problem.
Government officials near a nuclear power plant have been working on an emergency preparedness program. In 2004, a random sample of 405 community residents was obtained and 275 said they were confident they would be notified quickly of a radioactive incident. In 2005, after the program started, a random sample of 378 community residents was obtained, and 210 felt they were confident they would be notified quickly of a radioactive incident. At the 5% significance level, is there evidence that the true proportion of residents who were confident they would be notified quickly of a radioactive incident in 2005 declined from that of 2004?
: Read the following problem. In your dropbox submission, please include the following information:
a. Determine if the problem is either a test of hypothesis, a confidence interval or something else and specify the 'key words' found in the problem that demonstrate your choice.
b. Determine the procedure name and parameters involved for each problem (use the Stat 200 Formula and Technique Summary document.) Specify the 'key words' found in the problem that lead you to this choice.
c. If the problem is a hypothesis test, indicated if it has a lower-tail, upper-tail, or two-tail alternative hypothesis as well as the test statistic formula for the test. If the problem is a confidence interval then indicate the formula used for the margin of error.
You DO NOT need to do the ACTUAL test of hypothesis, confidence interval, etc. in order to post in the discussion board, just answer a, b, and c for the board.
The following table shows the amount spent on business lunches for twelve senior executives at a large corporation. Is there evidence at a .05 significance level that there is a difference in amount spent determined by corporation title?
Chief Financial Officer
Chief Executive Officer
Chief Administrative Office $49
$50
$38 $58
$55
$45 $44
$46
$32 $42
$61
$43