Consider the sample of exam scores to the​ right, arranged in increasing order. The sample mean and sample standard deviation of these exam scores​ are, respectively, 83.0 and 16.2. ​Chebychev's rule states that for any data set and any real number kgreater than​1, at least 100 left parenthesis 1 minus 1 divided by k squared right parenthesis​ % of the observations lie within k standard deviations to either side of the mean. Sample- 28 52 57 60 63 73
76 78 81 82 86 87
88 88 89 89 90 91
91 92 92 93 93 93
93 95 96 97 98 99
Use​ Chebychev's rule to obtain a lower bound on the percentage of observations that lie within
two standard deviations to either side of the mean.
Determine k to be used in​ Chebychev's rule.
k equals=
Use k in​ Chebychev's rule to find the lower bound on the percentage of observations that lie within
two standard deviations to either side of the mean.