Apopulation has a mean of 50 and a standard deviation of 4. how many standard deviations above the mean is a data value of 60?

a. 2.5
b. 2
c. 1.5
d. 3

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

Which equation shows y= 3 4 x− 5 2 in standard form? a 4x−3y=10 b 3x−4y=10 c 3x−4y=−10 d 4x−3y=−10