The mean monthly rent of students at Oxnard University is $780 with a standard deviation of $208. (a) John’s rent is $1,235. What is his standardized z-score? (Round your answer to 3 decimal places.)

z 2.1875 Numeric ResponseEdit Unavailable. 2.1875 correct.

(b) Is John’s rent an outlier?

multiple choice
Yes
No Correct

(c) How high would the rent have to be to qualify as an outlier?

John’s rent would have to be $ 1237 Numeric ResponseEdit Unavailable. 1237 incorrect. or higher to be considered an outlier.

a) 2.188

b) John's rent is not an outlier

c) His rent has to be higher than $1,235 to be an outlier

Step-by-step explanation:

The mean monthly rent of students at Oxnard University is $780 with a standard deviation of $208.

(a) John’s rent is $1,235. What is his standardized z-score?

We solve using z score formula

z = (x-μ)/σ, where

x is the raw score = $1235

μ is the population mean = $780

σ is the population standard deviation = $208

Hence,

z = 1235 - 780/208

z = 2.1875

Approximately to 3 decimal place = 2.188

(b) Is John’s rent an outlier?

No it isn't

(c) How high would the rent have to be to qualify as an outlier?

John’s rent would have to be higher than $1235

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.