Which of the following statements is NOT true? A) two normal curves can have the same mean, but different standard deviations.
B) if a data set is normal, 68% of the data is within one standard deviation of the mean.
C) the standard normal deviation has a mean = 0 and standard deviation = 1.
D) the area under every normal curve is 1, no matter the values of the mean and standard deviation
E) all the above are true.

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).

answer is  

c.

36

step-by-step explanation: