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I need some stats help!

A researcher hypothesizes that zylex, a new antidepressant, will affect concentration. It is known that scores on a standardized concentration test is normally distributed with a µ= 50 and a σ= 12. A random sample of n=16 participants, aged 19-35, are chosen from the State of New Jersey. The sample is put on a six month dosage plan of zylex. After six months, all the participants are given a standardized concentration test. The researcher records the data and calculates a sample mean of M=56. Are the data sufficient to conclude that the drug, zylex, does have an effect on concentration?


Based on the above research scenario, please answer the following questions:


Name the population: ____________________________________


Name the sample: ________________________________


What is the independent variable? ___________________


What is the dependent variable? ________________________


What is the appropriate hypothesis test? __________________


What two means are you comparing in this test? _____________________________


Please calculate the appropriate hypothesis test using all four steps:


Step 1:

Step 2:

Step 3:

Step 4: _______________________________

Write the statistical statement for your results: __________________________________


Interpret your results (relating back to the hypothesis): _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________


Is there a probability of Type I error? Yes ______ No ______


If yes, what is the probability of a Type I error? ________


Is yes, how could you have decreased that probability? __________________________________


Is there a probability of Type II error? Yes_____ No______


If it is appropriate, please calculate effect size: Answer:_____________

User Dan Bliss
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1 Answer

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Answer:

Explanation:

i do not know the ansrer

User JNayden
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