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Twenty years ago, entering male high school students of Central High could do an average of 24 pushups in 60 seconds. To see whether this remains true today, a random sample of 36 freshmen was chosen. If their sample mean was 22.5 with a sample standard deviation of 3.1, can we conclude that the mean is no longer equal to 24? Use the 5 percent level of significance.
How has quantitative analysis changed the current scenario in the management world today?
What is probability 0.10 called?
when the closing inventory is understated, the profit for the period will
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Question: (a) Packs of food have weights that are distributed with standard deviation 2.3 g. A random sample of 200 packets is taken. The mean weight of this sample is found t
Question: (i) A soft drink machine is regulated so that it fills an average of 300 cL per cup. If the amount of drink in each cup is normally distributed with standard deviati
What is the properties of a simple random sample when 50 females are numbered 1 through 50, and males are numbered 51 through 100?
What is regression analysis ? Discuss the relation between ''correlation coefficient'' and the ''regression coefficients''?
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