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

answer: it is d

step-by-step explanation: