Question

The mean monthly rent of students at Oxnard University is $890 with a standard deviation of $206. John's rent is $1,395. What is his standardized z-score?

Answer 1

Answer:

$299

Step-by-step explanation:

Rent+standard deviation 890+206= $1,096

John's rent: $1,395

Z-score: 1395 - 1096=$299

Answer 2

Answer: 2.4515

Step-by-step explanation:

Given : The mean monthly rent of students at Oxnard University is $\mu=\ 890$ with a standard deviation of $\sigma=\ 206$

Using the formula , $z=\dfrac{x-\mu}{\sigma}$, we have the  standardized z-value for x= 1395 as

$z=\dfrac{1395-890}{206}=2.45145631068\approx2.4515\ \text{ [To the nearest four decimal places.]}$

Hence, the standardized z-score = 2.4515