# Question: About of the area is between z 3 5

About % of the area is between z = -3.5 and z = 3.5 (or within 3.5 standard deviations of the mean). Find the indicated area under the curve of the standard normal distribution, then convert it to a percentage and fill in the blank. The results form the basis for the range rule of thumb and the empirical rule introduced in Section 3-3.

## Relevant Questions

For bone density scores that are normally distributed with a mean of 0 and a standard deviation of 1, find the percentage of scores that are a. Within 1 standard deviation of the mean. b. More than 2 standard deviations away ...Random Digits Computers are commonly used to randomly generate digits of telephone numbers to be called when conducting a survey. Can the methods of this section be used to find the probability that when one digit is ...Find the probability that a randomly selected adult has an IQ between 90 and 110 (referred to as the normal range). The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. a. One classical use of the normal distribution is inspired by a letter to “Dear Abby” in which a wife ...There are many situations in which a normal distribution can be used as a good approximation to a random variable that has only discrete values. In such cases, we can use this continuity correction: Represent each whole ...Post your question