The estimated standard deviation is (Round to three decimal places as needed.) Is this an acceptable approximation? O A. Yes, because the error of the range rule of thumb's approximation is greater than 15%. O B. Yes, because the error of the range rule of thumb's approximation is less than 15%. O C. No, because the error of the range rule of thumb's approximation is greater than 15%. O D. No, because the error of the range rule of thumb's approximation is less than 15%.

Yearly snow fall of a certain town follows a normal distribution with a mean of 37 inches and a standard deviation of 2.5 inches.  What is the z-score if in 2007 the snowfall was 40 inches?

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 64.5 inches tall. (to 2 decimal places)

The annual per capita consumption of oranges (in pounds) in the United States  can be approximated by a normal distribution. The mean annual per capita  of oranges is 19.2 with a standard deviation of 4 pounds.  what annual per capita consumption of oranges represents the 5th percentile?

brazil spends 6.24% of its GDP on education, calculate the z-score for brazil. miu = 4.8% and the standard deviation is roh = 1.66%.

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of man who is 72.2 inches tall. (to 4 decimal places)

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man who is 74.2 inches tall. (to 4 decimal places)

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man who is 63 inches tall. (to 4 decimal places)

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 75.5 inches tall. (to 2 decimal places)

Airplane seats have widthts with a mean of 22.0 inches and a standard deviation of 1.8 inches. Find the z-score of an airplane seat 19.9 inches wide. (to 2 decimal places)