ASSIGNMENT – 3 Q.no.1: Suppose we want to test whether girls, on average, score higher than 600 on the SAT verbal section. Suppose we choose our a to be .05. Data using a random sample of 20 girls and their verbal section scores is given below. Calculate the sample mean and test statistics. 650 730 510 670 480 800 690 530 590 620 710 670 640 780 650 490 800 600 510

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ASSIGNMENT –3
Q.no.1: Suppose we want to test whether girls, on average, score higher than 600 on the SAT verbal
section. Suppose we choose our a to be .05. Data using a random sample of 20 girls and their
verbal section scores is given below. Calculate the sample mean and test statistics.
650
730
510
670
480
800
690
530
590
620
710
670
640
780
650
490
800
600
510
Q.no.2: Test at the a = .05 significance level whether the mean of a random sample of size n = 16 is
statistically significantly less than 10 if the distribution from which the sample was taken is normal,
x = 8.4 and o 2 = 10.24. What are the null and alternative hypotheses for this test?
Transcribed Image Text:ASSIGNMENT –3 Q.no.1: Suppose we want to test whether girls, on average, score higher than 600 on the SAT verbal section. Suppose we choose our a to be .05. Data using a random sample of 20 girls and their verbal section scores is given below. Calculate the sample mean and test statistics. 650 730 510 670 480 800 690 530 590 620 710 670 640 780 650 490 800 600 510 Q.no.2: Test at the a = .05 significance level whether the mean of a random sample of size n = 16 is statistically significantly less than 10 if the distribution from which the sample was taken is normal, x = 8.4 and o 2 = 10.24. What are the null and alternative hypotheses for this test?
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