a. Having obtained a random sample from a population,you wish to use a chi-squared test
Chapter 14, Problem 11(choose chapter or problem)
a. Having obtained a random sample from a population,you wish to use a chi-squared test to decide whether thepopulation distribution is standard normal. If you basethe test on six class intervals having equal probabilityunder H0, what should be the class intervals?b. If you wish to use a chi-squared test to test H0: the populationdistribution is normal withand the test is to be based on six equiprobable (under H0)class intervals, what should be these intervals?c. Use the chi-squared test with the intervals of part (b) todecide, based on the following 45 bolt diameters,whether bolt diameter is a normally distributed variablewith in., in. .4974 .4976 .4991 .5014 .5008 .4993.4994 .5010 .4997 .4993 .5013 .5000.5017 .4984 .4967 .5028 .4975 .5013.4972 .5047 .5069 .4977 .4961 .4987.4990 .4974 .5008 .5000 .4967 .4977.4992 .5007 .4975 .4998 .5000 .5008.5021 .4959 .5015 .5012 .5056 .4991.5006 .4987 .4968
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