Mean of 24.3 pounds and standard deviation of 2.3. Find the percentage of​ 18-month-old girls who weigh more than 29.6 pounds.

Question

Use normal distribution table.

Answer 1

mean = 24.3, sd = 2.3, so 29.6 is (29.6-24.3)/2.3 standard deviations above the mean. (2.304)

 

Then look up in the z table (online) I get 1.06% (rounded).