Heights of college women have a distribution that can be approximated by a normal curve with a mean of 65 inches and a standard deviation equal to 3 inches. About what proportion of college women are between 65 and 67 inches tall?

Americans love ice cream .The annual per capita consumption of ice cream ,in pounds ,in the united states can be approximately by a normal distribution with mean 16.5 lbs and standard deviation 2.5 lbs  what percent of Americans eat less than 14 lbs of ice cream each year ?

A LED lamp has a mean usage of 750 hours with standard deviation of 50 hours. If LED lamp usage is normally distributed, what percentage of the distribution that lies between 600 and 900 hours ?

The heights of 18 year old men are normally distributed with a mean of 67 inches and a standard deviation of 3 inches. What range of heights represent approximately 68% of 18 year old men

The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances that someone is earning more than $20 an hour?

How is standard deviation a measure of distance?

The length in feet of a structural I-beam is normally distributed with a mean of 6 ft and a standard deviation of 1 inch. Quality control requirements demand a beam to be rejected if the length of the beam is more than 1 inch different from the mean. What percentage of the I-beams will be rejected?

A quantitative data set has a size of 50. At least how many observations lie within seven standard deviations to either side of the mean?

Scientists find that a particular species of caterpillar has a mean mass of 32 grams with a standard deviation of 4  grams. What percentage of caterpillars weigh MORE than 40 grams?

The weight of newborn babies is normally distributed, with a mean of 3.5 kilograms and a standard deviation of 0.23 kilograms. Find the weight that 14% of newborn babies weigh more than. Round your answer to 2 decimal places. kg