At one college, gpa's are normally distributed with a mean of 2.9 and a standard deviation of 0.6. using the empirical rule, what percentage of students at the college have a gpa between 2.3 and 3.5? 84.13% 68% 99.7% 95%

68%

Step-by-step explanation:

According to the empirical rule:

So first we have to find how many standard deviations away from the mean are the given two values. This can be done by converting them into z scores.

The formula to calculate the z-score is:

Using the given values in above formula, we get:

For x = 2.3

For x = 3.5

This means we have to tell how many data values are within one standard deviation of the mean. According to the empirical rule 68% of the values are between z= -1 and z = 1. So the answer is 68%

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720