16. The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday, The frequency summarizes the results. Find the standard deviation. Round your answer to one decimal place. Waiting time Number of
(minutes) customer
0-under 4 13
4-under 8 11
8-under 12 9
12-under 16 16
16-under 20 0
20-under 24 1

A. 4.9
B. 7.0
C. 5.2
D. 5.4

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!

this doesn't make sense lol

more detail

step-by-step explanation: