Answer:
9
Step-by-step explanation:
Answer:
Let X = score of final exam.
X~normal(23, 16)
(a)
percentage of score between 19 and 27
= P(19 < X < 27)
= P((19-23) / sqrt(16) < Z < (27 - 23) / sqrt(16))
= P(-1 < Z < 1)
= 1 - P(Z <= -1) - P(Z >= 1)
= 1 - P(Z >= 1) - P(Z >= 1)
= 1 - 2*P(Z >= 1)
= 1 - 2(0.1587)
= 0.6826
= 68.26%
According to Normal Distribution Table
P(Z>=1) = 1 - P(Z<1) = 1-0.8413
So the final percentage is 68.26%
Answer:
Hello!!
The answer to the first question is D. For 15 days
The answer to the second question is A. or 3 x 1/4
The answer to the third question is A. or 1/20 cup
The answer to the fourth question is A.
The answer to the fifth question is A. or 4 quarts
Step-by-step explanation:
These are the correct answers!
have a nice day!
