Problem
In a sample of 137 tables, the average height was found to be 35.2 in. with a variance of 2.2 . Give a point estimate for the population standard deviation of the height of the tables. Round your answer to two decimal places, if necessary. Answer How to enter your answer (opens in new window) 5 Points Tables Keypad Keyboard Shortcuts
Solution
Step 1 ：Given that the variance of the sample is 2.2, the standard deviation is the square root of the variance.
Step 2 ：Calculate the standard deviation: \(\sqrt{2.2} = 1.4832396974191326\)
Step 3 ：Round the standard deviation to two decimal places: 1.48
Step 4 ：Final Answer: The point estimate for the population standard deviation of the height of the tables is \(\boxed{1.48}\)
