In the absence of special preparation, SAT Mathematics (SATM) scores in 2019 varied Normally with mean ?=528 and ?=117. Fifty students go through a rigorous training program designed to raise their SATM scores by improving their mathematics skills. Either by hand or by using the P-Value of a Test of Significance Applet, carry out a test of ?0:???:?=528>528�0:�=528� (with ?=117) in each of the following situations. The students' average score is ?¯=555 . Is this result significant at the 5% level? Yes, because the ?�‑value of the test is smaller than 0.050.05 . No, because the ?�‑value of the test is smaller than 0.050.05 . No, because the ?�‑value of the test is larger than 0.050.05 . Yes, because the ?�‑value of the test is larger than 0.050.05 .
In the absence of special preparation, SAT Mathematics (SATM) scores in 2019 varied Normally with mean ?=528 and ?=117. Fifty students go through a rigorous training program designed to raise their SATM scores by improving their mathematics skills. Either by hand or by using the P-Value of a Test of Significance Applet, carry out a test of
(with ?=117) in each of the following situations.
The students' average score is ?¯=555 . Is this result significant at the 5% level?
Yes, because the ?�‑value of the test is smaller than 0.050.05 .
No, because the ?�‑value of the test is smaller than 0.050.05 .
No, because the ?�‑value of the test is larger than 0.050.05 .
Yes, because the ?�‑value of the test is larger than 0.050.05 .
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