Determining probability of serum cholesterol level

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Reference no: EM1312185

Q1) Serum cholesterol levels in men aged 18-24 are normally distributed with a mean of 178.1 and standard deviation of 40.7. Units are mg/100 mL, and data are based on National Health Survey.

a) If 1 man aged 18-24 is arbitrarily chosen, determine the probability that his serum cholesterol level is greater than 220.

b) If 1 man aged 18-24 is arbitrarily chosen, determine the probability that his serum cholesterol level is between 165 and 200.

Q2) Assume you saw the email which stated that mean age of employees in the company is less than 40 years and that more than 50% of employees are female. You come to a decision to take sample of employees and test claim. Suppose the Cumba database represents random sample of 100 employees. By using "Hypothesis Tests One Sample" file and.05 significance level:

By using gender data only, test whether more than 50% of employees are female.

Reference no: EM1312185

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