Question

A drug company is investigating a new pain relief medicine for migraine. To test the effectiveness...

A drug company is investigating a new pain relief medicine for migraine. To test the effectiveness of the new drug, 10 volunteers were selected and randomly assigned to receive either the new medication or a placebo. The subjects were instructed to take the drug or placebo during their next migraine headache episode and to report their pain on a scale of 1 to 10 (10 being most pain). The following table summarize the results:

Placebo Group

Treatment Group

9

4

8

5

7

3

7

7

6

5

  1. Write out your null and alternative hypotheses.
  2. Carry out the appropriate statistical test to determine if the new drug is effective (Two sided).
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Here to test the given hypothesis that the new drug is effective , t-test for difference of means is used. Here is attached the detailed solution:

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. ) Suppose a researcher is interested in the effectiveness of a new drug that is...
1. ) Suppose a researcher is interested in the effectiveness of a new drug that is intended to naturally increase hours of sleep for elderly patients experiencing insomnia above 5 hours. Suppose he collects information from a group of 64 patients, and calculates a sample mean of 6.4 hours of sleep and a standard deviation of s=0.8.   Write out your null and alternative hypotheses. Carry out the appropriate statistical test to determine if the new treatment is effective (One sided)?...
A pharmaceutical company tested three formulations of a pain relief medicine for migraine headache sufferers. Volunteers...
A pharmaceutical company tested three formulations of a pain relief medicine for migraine headache sufferers. Volunteers were selected and randomly assigned to one of the three drug formulations. The volunteers were instructed to take the drug during their next migraine headache episode and to report their pain on a scale of 1 to 10 (10 being most pain). The data are below. What can be concluded with α = 0.05? formulation A formulation B placebo 5 6 8 4 5...
A researcher wants to evaluate the pain relief effectiveness of a new medication for chronic pain...
A researcher wants to evaluate the pain relief effectiveness of a new medication for chronic pain sufferers. Using a pain scale from 0 to 10 (where 0 = no pain at all, and 10 = the most pain you can imagine), she compares the pain level for a sample of n1 = 4 people who received the new medication, with the pain level for a sample of n2 = 4 people who received a placebo. The data are as follows:...
3) The effectiveness of a headache medicine is tested by measuring the intensity of a headache...
3) The effectiveness of a headache medicine is tested by measuring the intensity of a headache in patients before and after drug treatment. The data consist of before and after intensities for each patient. (Circle one) a) Two Independent Samples b) Matched Paired Data 4) The effectiveness of a new headache medicine is tested by measuring the average amount of time until a headache is cured for subjects who use the medicine and comparing that to the average amount of...
Migraine and Acupuncture: A migraine is a particularly painful type of headache, which patients sometimes wish...
Migraine and Acupuncture: A migraine is a particularly painful type of headache, which patients sometimes wish to treat with acupuncture. To determine whether acupuncture relieves migraine pain, researchers conducted a randomized controlled study where 158 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 77 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 81 patients in the control group received placebo acupuncture (needle insertion at non-acupoint locations)....
A medical researcher wanted to test the impact of four different pain-relief drugs (‘Placebo’, ‘Drug X’,...
A medical researcher wanted to test the impact of four different pain-relief drugs (‘Placebo’, ‘Drug X’, ‘Drug Z’ and ‘Drug Y’) on a group of twenty randomly selected patients with a long-term chronic illness. He wanted to compare the impact of each drug on each individual patient’s rating of pain and across the group of patients, as well as any interaction effects. What sort of test design best suits this study? a. Independent factorial design b. ANOVA c. Repeated-measures factorial...
A randomized controlled trial is run to evaluate the effectiveness of a new drug for asthma...
A randomized controlled trial is run to evaluate the effectiveness of a new drug for asthma in children, with the outcome being relief from asthma symptoms or not (what type of variable is this?). A total of 250 children are randomized to either the new drug or placebo (125 per group). Suppose that there are 63 boys assigned to the new drug group who experience relief and 58 boys assigned to the placebo who experience relief. Is there a statistically...
To test the effectiveness of a new drug, a researcher gives one group of individuals the...
To test the effectiveness of a new drug, a researcher gives one group of individuals the new drug and another group a placebo. The results of the study are shown in the following table. At α=0.05, can the researcher conclude that the drug is effective? (Use Chi-Square testing procedure) Effective Not Effective Drug 32 9 Placebo 12 18 (a) State the null and alternative hypothesis for this test. (b) Calculate the test statistic and the critical value. (c) Report the...
1) Migraine and Acupuncture: A migraine is a particularly painful type of headache, which patients sometimes...
1) Migraine and Acupuncture: A migraine is a particularly painful type of headache, which patients sometimes wish to treat with acupuncture. To determine whether acupuncture relieves migraine pain, researchers conducted a randomized controlled study where 164 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 75 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 89 patients in the control group received placebo acupuncture (needle insertion at non-acupoint...
A manufacturer has produced a new drug for depression. The pharmaceutical company performed a study in...
A manufacturer has produced a new drug for depression. The pharmaceutical company performed a study in which 25 depressed subjects took the new medication and 25 depressed subjects took a placebo pill. Neither the subjects nor the examiners administering the questionnaire knew who was in the drug group and who was in the placebo group. After 2 months, the subjects who took the drug had significantly improved scores on a standardized depression symptom questionnaire. The only side effects seen with...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT