DIRECTIONS: 2. Identify the appropriate hypothesis test for each of the following research situations labeled (a) - (d). Make sure to label yourresponses clearly!(a) A researcher conducts a developmental study to determine if there is a significant difference in social skills between 9-year-old and 11-year-old children.(b) A researcher records the daily caffeine consumption and the activity level of a group of college freshman. The researcher would liketo determine whether there is a significant relationship between caffeine level and activity.(c) A researcher would like to determine whether a 4-week therapy program produces significant changes in behavior. A group of 25participants is measured before therapy, at the end of therapy, and again 3 months after therapy.(d) A researcher would like to determine whether a new program for teaching statistics is significantly better than the old program. It issuspected that the new program will be very effective for small-group instruction but less effective with larger classes. The study involvescomparing four groups of students: a small class taught in the new method, a small class taught in the old method, a large class taught in thenew method, and a large class taught in the old method.

a) A researcher conducts a developmental study to determine if there is a significant difference in…

Answered: 2. Identify the appropriate hypothesis…

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2. Identify the appropriate hypothesis test for each of the following research situations labeled (a) - (d). Mal arly!

MATLAB: An Introduction with Applications

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Concept explainers

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.

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DIRECTIONS: 2. Identify the appropriate hypothesis test for each of the following research situations labeled (a) - (d). Make sure to label your
responses clearly!
(a) A researcher conducts a developmental study to determine if there is a significant difference in social skills between 9-year-old and 11-
year-old children.
(b) A researcher records the daily caffeine consumption and the activity level of a group of college freshman. The researcher would like
to determine whether there is a significant relationship between caffeine level and activity.
(c) A researcher would like to determine whether a 4-week therapy program produces significant changes in behavior. A group of 25
participants is measured before therapy, at the end of therapy, and again 3 months after therapy.
(d) A researcher would like to determine whether a new program for teaching statistics is significantly better than the old program. It is
suspected that the new program will be very effective for small-group instruction but less effective with larger classes. The study involves
comparing four groups of students: a small class taught in the new method, a small class taught in the old method, a large class taught in the
new method, and a large class taught in the old method.

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