Determine whether to reject or fail to reject the null hypothesis in the following situations: a. t(40)=2.49,α=0.01 , one-tailed test to the right b. X1= 64, X2=54, n1=14, n2=12, sX1-X2=9.75, a=0.05, two tailed test c. 95% Confidence Interval: (0.50,2.10)

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5. Determine whether to reject or fail to reject the null hypothesis in the following situations: a. t(40)=2.49,α=0.01 , one-tailed test to the right b. X1= 64, X2=54, n1=14, n2=12, sX1-X2=9.75, a=0.05, two tailed test c. 95% Confidence Interval: (0.50,2.10)
4. Calculate he standard error from the following descriptive statistics
a. S1 = 24, s2 =21, n¡ = 36, n2 = 49
b. S = 15.40, s2 = 14.80, n¡ = 20, n2 = 23
c. S1 = 12, s2 =10, n, = 25, n2= 25
5. Determine whether to reject or fail to reject the null hypothesis in the
following situations:
a. 1(40) = 2.49, a = 0.01, one-tailed test to the right
b. X, = 64, X, = 54, nj = 14, n2 = 12, sy x = 9.75, a = 0.05, two-tailed
test
c. 95% Confidence Interval: (0.50. 2.10)
6. A professor is interest in whether or not the type of software program used
in a statistics lab affects how well students learn the material. The professor
teaches the same lecture material to two classes but has one class use a
point-and-click software program in lab and has the other class use a basic
programming language. The professor tests for a difference between the two
classes on their final exam scores.
54
24
search
hp
Transcribed Image Text:4. Calculate he standard error from the following descriptive statistics a. S1 = 24, s2 =21, n¡ = 36, n2 = 49 b. S = 15.40, s2 = 14.80, n¡ = 20, n2 = 23 c. S1 = 12, s2 =10, n, = 25, n2= 25 5. Determine whether to reject or fail to reject the null hypothesis in the following situations: a. 1(40) = 2.49, a = 0.01, one-tailed test to the right b. X, = 64, X, = 54, nj = 14, n2 = 12, sy x = 9.75, a = 0.05, two-tailed test c. 95% Confidence Interval: (0.50. 2.10) 6. A professor is interest in whether or not the type of software program used in a statistics lab affects how well students learn the material. The professor teaches the same lecture material to two classes but has one class use a point-and-click software program in lab and has the other class use a basic programming language. The professor tests for a difference between the two classes on their final exam scores. 54 24 search hp
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