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Sav [38]
2 years ago
12

To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the

course. The results are given below. Exam Score Exam Score Student Before Course (1) After Course (2) 1 530 670 2 690 770 3 910 1,000 4 700 710 5 450 550 6 820 870 7 820 770 8 630 610 If they hope that the prep course is effective in improving the exam scores, what is the alternative hypothesis?
Mathematics
1 answer:
Lisa [10]2 years ago
4 0

Solution :

Group   Before     After

Mean    693.75    743.75

Sd         155.37     143.92

SEM        54.93     50.88

n              8            8

Null hypothesis : The preparation course not effective.

$H_0: \mu_d = 0$

Alternative hypothesis : The preparation course is effective in improving the exam scores.

$H_a : \mu_d>0$  (after -  before)

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olga2289 [7]

Answer:

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7 0
3 years ago
Sally is a sales manager.She makes $73,000 a year.Sally has worked hard all year and receives a 6% raise.How much will sally mak
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Step-by-step explanation:

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