Ten students took a placement test to see if they could bypass a prerequisite requirement for a course. out of 100 points possible, the scores were: 45, 62, 63, 58, 81, 77, 64, 69, 82, 51. the student who scored 69 was at what percentile?

And we can find the probability:

And that correcpond to the 63 percentile approximated.

Step-by-step explanation:

We have the following dataset:

45, 62, 63, 58, 81, 77, 64, 69, 82, 51.

In order to find this problem we need to assume a distribution for the data. If we assume that the scores are normally distributed we can use the z score in order to find the percentile for the 69 value.

First we need to find the mean and deviation with the following formulas:

And then we can find the z score with the following formula:

If we replace for X =69 we got this:

And we can find the probability:

And that correcpond to the 63 percentile approximated.

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !

answer: this is not a question

step-by-step explanation: this is a answer