Statistics- The Institute of Nutritious of Central America and Panama (INCAP)

| March 30, 2017

Question
The Institute of Nutritious of Central America and Panama (INCAP) has carried out extensive dietary studies and research projects in Central America. In one study reported, serum total cholesterol measurements for a sample of 60 low-income rural Indians were reported (mg/L) in the following table. Management would like to know if it plausible that serum cholesterol level is normally distributed for this population with = 150 and =30.

Frequency Class Observed Frequency
Less than 118 5
118 – 128 9
128 – 138 15
138 – 148 12
148 – 158 8
158 – 168 6
Greater than 168 5

Use alpha = 5% and determine the critical 2 value.

Select one:

A. 14.449B. 11.143C. 12.592D. 9.488

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