Wait times at an orthodontist’s office are typically 17 minutes, with a standard deviation of 2 minutes. What percentage should be seen by the doctor between 11 and 23 minutes for this to be considered a normal distribution?

0.997

Step-by-step explanation:

The mean wait times at an orthodontist’s office are typically 17 minutes, with a standard deviation of 2 minutes.

We want to find the percentage that should be seen by the doctor between 11 and 23 minutes for this to be considered a normal distribution.

We know that 23= 17+3(2), is 3 standard deviation above the mean.

Also, 11=17-3(2), is 3 standard deviation below the mean.

According to the empirical rule, approximately 99.7% of the distribution are within 3 standard deviations of the mean.

i know the answer is 3

step-by-step explanation:

see below

step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.