21. Birth weights of babies born to full-term pregnancies follow roughly a normal distribution. At Asian Hospital, the mean weight of babies is 7 Ibs with a standard deviation of 14oz. (1 lb = 14 oz). Dr. Watts has four deliveries coming up during the night. Assume the birth weights of these babies can be viewed as a simple random sample. 16. What is the probability that the average weight of the four babies will be more than 7.5 lbs? 0.65% 15.87% 12.65% 30.85% 22. When one is using the standard normal distribution, P(z < 0) = can not be determined 1 O 0.5

21. Birth weights of babies born to full-term pregnancies follow roughly a normal distribution. At Asian Hospital, the mean weight of babies is 7 Ibs with a standard deviation of 14oz. (1 lb = 14 oz). Dr. Watts has four deliveries coming up during the night. Assume the birth weights of these babies can be viewed as a simple random sample. 16. What is the probability that the average weight of the four babies will be more than 7.5 lbs? 0.65% 15.87% 12.65% 30.85% 22. When one is using the standard normal distribution, P(z < 0) = can not be determined 1 O 0.5

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

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Please help me with both questions. These are just 2 and you are allowed to answer 3. Please help asap. Thank you!

21. Birth weights of babies born to full-term pregnancies follow roughly a normal distribution. At
Asian Hospital, the mean weight of babies is 7 Ibs with a standard deviation of 14oz. (1 lb = 14
oz).
Dr. Watts has four deliveries coming up during the night. Assume the birth weights of these
babies can be viewed as a simple random sample. 16. What is the probability that the average
weight of the four babies will be more than 7.5 Ibs?
0.65%
15.87%
12.65%
30.85%
22. When one is using the standard normal distribution, P(z < 0) =
can not be determined
1
0.5

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