if the mean is 3 and the standard deviation is 1,the score associated with a raw score of 4.5 ?
is -1
is-0
cannot be computed from this information alone
is 1.50
is 1.25
The score associated with a raw score of 4.5 can be calculated using the formula for z-score:
z = (x - μ) / σ
where z is the z-score, x is the raw score, μ is the mean, and σ is the standard deviation.
Plugging in the values given in the problem:
z = (4.5 - 3) / 1
z = 1.5
Therefore, the score associated with a raw score of 4.5 is 1.5. So the correct answer is 1.50.