The Institute of Nutritious of Central America and Panama (INCAP) has earned out

Question

The Institute of Nutritious of Central America and Panama (INCAP) has earned out extensive dietary studies and research projects in Central America In one study reported, scrum 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 mu = 150 and sigma = 30 Use alpha = 5% and determine the critical x^2 value Select one 14 449 11 143 12 592 9 488

Explanation / Answer

From the given data we find degrees of freedom as,

Degrees of freedom = n - 1

= 7 - 1

= 6

Alpha = 0.05

Therefore X2 critical value is = 12.592

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