Sally took her stats test last week and scored a 45%. The class average was 55%with a standard deviation of 4.5. How many standard deviations below the mean did Sally score? (Hint: z-score )A) 3.33 SD above the mean
B) 2.22 SD below the mean
C) 2.22 SD above the mean
D) 3.33 SD below the mean

x+14

step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

answer: the answer is ann