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(Solution document) ) The table below shows the critical reading scores for 14 students the first two times they took a standardized test. At alphaequals=0.


1.) The table below shows the critical reading scores for 14 students the first two times they took a standardized test. At alpha?equals=?0.01, is there enough evidence to conclude that their scores improved the second time they took the? test? Assume the samples are random and? dependent, and the population is normally distributed.

Student:    1,      2,     3,     4,     5,     6,    7,      8,     9,    10,   11,   12,   13,   14

First test: 589, 418, 437, 612, 547, 579, 337, 463, 566, 535, 510, 547, 622, 394

Sec  test: 594, 477, 493, 627, 526, 620, 325, 581, 646, 592, 546, 568, 634, 413


(b) Find the critical? value(s) and identify the rejection? region(s).

 t0=______

?                       -

?(c) Calculate d and sd.


(d) Use the? t-test to find the standardized test statistic t.


2.) In a survey of 175

 







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