Question: Listed in increasing order are the serum creatine phosphokinase (CK) levels (U/l) of 36 healthy men (these arc the data of Example 2.2.6): The sample

Listed in increasing order are the serum creatine phosphokinase (CK) levels (U/l) of 36 healthy men (these arc the data of Example 2.2.6):

The sample mean CK level is 98.3 U/l and the SD is 40.4 U/l. What percentage of the observations are within
(a) 1 SD of the mean?
(b) 2 SDs of the mean?
(c) 3 SDs of the mean?

25 62 8295 110 139 42 64 83 95 113 145 48 67 84 100 118 151 57 68 92 10 119 163 58 70 93 104 121 201 60 78 94 110 123 203 101 203

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