a grade never repeated repeated n, = 1 349 x, = .30 n2 = 86 X2 = -.04 S2= 1.17 Si=.97 (a) The researcher is wondering that the average height of children who never re- peated a grade is higher than the average of children who repeated. Set up the appropriate H. and H,. (b) Propose a formula to calculate the test statistic and report the result. (Assumetwo populations have equal variance and both populations follow normal distributions). (c) Find the P-value and make your conclusion on a = .05.
a grade never repeated repeated n, = 1 349 x, = .30 n2 = 86 X2 = -.04 S2= 1.17 Si=.97 (a) The researcher is wondering that the average height of children who never re- peated a grade is higher than the average of children who repeated. Set up the appropriate H. and H,. (b) Propose a formula to calculate the test statistic and report the result. (Assumetwo populations have equal variance and both populations follow normal distributions). (c) Find the P-value and make your conclusion on a = .05.
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Author:Amos Gilat
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
Transcribed Image Text:a grade
never repeated
repeated
sh
n, = 1 349
x, =.30
n2 = 86
X2 = -.04
S1 =.97
S2 1.17
(a) The researcher is wondering that the average height of children who never re- peated
a grade is higher than the average of children who repeated. Set up the appropriate
H. and H..
(b) Propose a formula to calculate the test statistic and report the result. (Assumetwo
populations have equal variance and both populations follow normal distributions).
(c) Find the P-value and make your conclusion on a =.05.
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