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ID: 3356209 • Letter: O
Question
on D Abb.ndsu.nodak.edu D & D LYM My courses --kboard Learn Tlofts Rent NDSU - Northe University Campus Connection Apple ESPN iCloud Google Facebook , Twitter Which of the following is always true for all probability density functions of continuous random variables? A. They are symmetrical o B. The area under the curve is 1.0 C. They are skewed to the right O D. They are skewed to the left QUESTION 8 4 points Saved If x denotes a continuous random variable, P{x =C) = 0 for every number c. o True False QUESTION 9 4 points Save Answer Let z1 be a z score that is unknown but identifiable by position and area. If the area to the right of z1 is 0.7088, then the value of zis: A -1.06 B, 1.06 C. 0.55 D, -0.55 QUESTION 10 4 points Save Answer If zis a standard normal random variable, the area between z= 0.0 and z=1.20 is 0.3849, while the area between ze 0.0 and z = 1.40 is 0.4192. What is the area between z .1.20 and z=1.40? Click Save and submit to save and submit. Click Save Al Answers to save all answers Save AII Answers Save and submitExplanation / Answer
9) P(z > x) = 0.7088
Using normal table:
z = -0.55
D option
10) P(-1.2 < z < 1.4)
Using normal table
P = 0.8042
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