Answers
. Use the TI-83 steps to find the p-value as follows: Press the STAT button and highlight Tests Press number 4:2-sample Ttest Highlight Stats and Enter the values of = 23.8, s, = 32.0,n = 100,72 = 47.6,5, = 33.5, n = 100 Selct left tailed (1 <uz) and no for pooled Highlight calculate and hit enter Output: . . TEXAS INSTRUMENTS TI-83 Plus 2-SamPTTest 1<h2 t=-5.137322183 P=3.3314541 E-7 df=197.
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5859426 X1=23.8 +2=47.8 The required p-value is (3.3314541 E-7) Hence, the correct answer is option (B) B. P-value is about 0 (3.33 E-7) zero
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