Suppose in the patient group, one of the 250 weighing This group of patients were found 48 kg
, the standard deviation of 10 kg
seek, the number of patients with the weight between 42 - 60 kg
How to make the weight of the patient.
From = instead of = =
1 42 48 1 = 10 will 1 = 0.6
2 = 60 = 48 2 = 10 will 2 = 1.2
bring up to write the area under the normal curve to find the desired value Author has shown from the table, the area between
= - 1.6 to = 0 was 0.2257 and
= = area between 0 to 12 was 0.3849
so the area between = - 1.6 to = 1.2 was 0.2257 0.3849 = 0.6106
is that patients with water หนักร between 42 - 60 kg = 0.6106 x 250 = 152.65
so the number of patients whose weight is between 42 - 60 kg, and there were 153 people Ans
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