Answer: 1.25
Step-by-step explanation:
Given: A college-entrance exam is designed so that scores are normally distributed with a mean = 500 and a standard deviation = 100.
A z-score measures how many standard deviations a given measurement deviates from the mean.
Let Y be a random variable that denotes the scores in the exam.
Formula for z-score =
Z-score =
⇒ Z-score =
⇒Z-score =1.25
Therefore , the required z-score = 1.25
The answer is 5 x -3 + 4 x 2 / 2 = -15 + 8 / 2 = -11
Answer:
7/9 which is the opposite of 2/9
Step-by-step explanation:
I think there is no simplified fractions for this number it will be the same -4/17
I would say read it well and then write down an equation or expression to represent the data so its easier for you to understand and/or solve.