Answer:
let x be the number
seven less than three times a number ==> 3x - 7
Step-by-step explanation:
Answer:
The Z score of the person is -3.09.
Step-by-step explanation:
The standard normal deviate (Z) for a normal distribution is given by

where,
X = the value of observation
is mean of the observations and
σ = standard deviation of the score
Applying values we get
