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Drug Trial Problem
Clinical trials for a drug was conducted using a treatment group and a placebo group. The results are shown in the table below.
| Treatment | Placebo | |
| μ | μ₁ | μ₂ |
| n | 33 | 38 |
| x̄ | 2.31 | 2.65 |
| s | 0.95 | 0.67 |
Use a 0.05 significance level to test the claim that the two samples are from populations with the same
State the final conclusion regarding the claim (using confidence interval).
Because the confidence interval limits ___________ 0, there ___________ appear to be a significant difference between the two sample means.
There ________________ sufficient evidence to warrant rejection of the claim.
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- OxyContin The drug OxyContin (oxycodone) is used to treat pain, but it is dangerous because it is addictive and can be lethal. In clinical trials, 227 subjects were treated with OxyContin and 52 of them developed nausea (based on data from Purdue Pharma L.P.). a. Construct a 95% confidence interval estimate of the percentage of OxyContin users who develop nausea. b. Compare the result from part (a) to this 95% confidence interval for 5 subjects who developed nausea among the 45 subjects given a placebo instead of OxyContin: 1.93% <H0: =, >, <, or ≠ _______________ year (s). H1: =, >, <, or ≠ _________________ year (s). Since the P-value is less than or equal to, or more than or equal to the significance level, reject or do not reject the null hypothesis. There is or is not sufficient evidence to support the claim that actress are generally younger when they won the award than actors. Since the confidence interval contains only zero, positive number values, or only negative number values, reject or warrent rejection of the null hypothesis.
