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AS FOR GIVEN DATA..
The accompanying data on maximun weight of lift (MAWL in kg) was randomly selected from the population of healty males age 18 – 30. Does the following data suggest that the population mean is equal to 25 kg? The population standard deviation is 5.45. Use a significance level (alpha) of 0.10.
25 23 27 21 24 22 23
SOL:
Option ( A ) is correct. We will use Z one population because population standard deviation is known
H0: u = 25
H1: u is not equal to 25
Sample mean = (25+23+27+21+24+22+23)/7 = 23.57
Z = ((23.57-25)/5.45)* Sqrt (7) = -0.6942
Critical value are -1.645 and 1.645
Since test statistic lies between critical values we failed to reject the null hypothesis and conclude that mean is not significantly different
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A well designed and safe workplace can contribute greatly to increas significance level (alpha) of 0.10...
A well designed and safe workplace can contribute greatly t (MA randomly selected from the population of healthy males age 18-30. Does the following data suggest that the population mean is equal to 25 kg? The to increased productivity. The accompanying data on maximun weight of lift population standard 25 23 27 21 24 22 23 a H1>25 kg b.H1 25 kg G. H125 kg d Ho 25 kg anstion 2 of 10