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To test H0: σ= 2.3 versus H1 : σ> 2.3, a random sample of size n = 18 is obtained from a population that is known to be normally distributed. Complete parts (a) through (d). (a) If the sample standard deviation is determined to be s- 2.1, compute the test statistic. z(Round to three decimal places as needed,)

TO test H0: ơ-1.4 versus H1 : ơt 1.4, a random sample of size n-21 is obtained from a population that is known to be normally distributed. (a) If the sample standard deviation is determined to be s -1.8, compute the test statistic. | | (Round to three decimal places as needed.)

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Answer #1

Herre oe have: б 2.3 18-1x2 2.3 Here we have 1-8 21-1) 1.8 2 1.Y

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