The temperature in a certain location was recorded each day for two months. The mean temperature was 84.9 degrees F with a standard deviation 2.5 degrees F. What can you determine about these data by using Chebyshev's Inequality with K = 3.

At least % of the days had temperatures between degrees F and degrees F.

At least 45% of the days had temperatures between 90 degrees F and 80 degrees F.

Step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true