Question
In: Statistics and Probability
A researcher randomly divides 19 subjects into two groups. One group receives a new drug called...
A researcher randomly divides 19 subjects into two groups. One group receives a new drug called RT56 for 3 months, the other a placebo (looks like RT56, but is a sugar pill). She then measures reaction time (RT) on a complex task and finds the following RT s in seconds (s): Group 1 Group 2 RT56 Placebo N=10 N=9 .456 .532 .347 .458 .435 .768 .234 .643 .521 .678 .411 .569 .398 .486 .254 .647 .391 .501 .289 1. State the independent and dependent variables. 2. State the Null Hypothesis in words and symbols. 3. Compute the appropriate statistic. 4. What is the decision? 5. State the full conclusion in words.
Solutions
Expert Solution
Here Reaction time is dependent variable and treatment group like placebo and RT56 are independent variable.
Step1:
Null Hypothesis (Ho): The average reaction time is the same between
the placebo group and RT56 group.
Alternative Hypothesis (H1): The average reaction time is different between the placebo group and RT56.
We conclude that the average reaction time is different between the placebo group and RT56.
orchestra answered 1 year agoRelated Solutions
A researcher randomly divides 19 subjects into two groups. One group receives a new drug called...
A researcher randomly divides 19 subjects into two groups. One
group receives a new drug called RT56 for 3 months, the other a
placebo (looks like RT56, but is a sugar pill). She then measures
reaction time (RT) on a complex task and finds the following RT s
in seconds (s): Group 1 Group 2 RT56 Placebo N=10 N=9 .456 .532
.347 .458 .435 .768 .234 .643 .521 .678 .411 .569 .398 .486 .254
.647 .391 .501 .289
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6
4
6...
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To test the effectiveness of a new drug, a researcher gives one group of individuals the...
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Obs.,
Exp
Obs., Esp
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Placebo
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