Jimmy collected a random sample of 30 psychology majors and administered an IQ test. This group had an average IQ of M = 110. Compare this statistic to the general population, which has a mean IQ of 100 and a standard deviation of 15. Use alpha of .05 and a two tailed test Step 1:Pick the Test:Hypotheses: Step 2:Alpha: One-tail or two-tail: Decision Rule (What is the critical value): Step 3: Calculations Step: 4 InterpretationWhat did you do? What did you find (include APA)? What does it mean?Did you reject or fail to reject null hypothesis: APA? Step 4:

Answered: ard deviation of 15.   Use alpha of .05…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Jimmy collected a random sample of 30 psychology majors and administered an IQ test. This group had an average IQ of M = 110. Compare this statistic to the general population, which has a mean IQ of 100 and a standard deviation of 15.  
Use alpha of .05 and a two tailed test

Step 1:

Pick the Test:

Hypotheses:

Step 2:

Alpha:

One-tail or two-tail:

Decision Rule (What is the critical value):

Step 3: Calculations

Step: 4 Interpretation

What did you do? What did you find (include APA)? What does it mean?

Did you reject or fail to reject null hypothesis:

APA?

Step 4:

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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