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Assignment No: 2 (Lessons 28 – 30)
Question 1: Marks: 3+4=7
a) A box contains 4 red and 5 white flowers. A random sample of 6 flowers is drawn without replacement from the box. Find the probability that the sample contains 3 red flowers.
b) If X is binomially distributed with mean 8 and variance 4.8, then find the parameters of binomial distribution.
Question 2: Marks: 3+5=8
a) Suppose the number of defective screws produced by a machine per day follows Poisson distribution with parameter 2. What is the probability that, out of the total production of the day, there are at least one defective screw?
b) The Army reports that the distribution of head circumferences among soldiers is approximately normal with mean 23.4 inches and standard deviation 1.4 inches. What percent of soldiers have a head circumference between 21.0 inches and 24.0 inches?
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31st July 2015, 23:59, 2015
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This assignment will strengthen the basic idea about the concept of the following distributions:
Assignment No: 2 (Lessons 28 – 30)
Question 1: Marks: 3+4=7
a) A box contains 4 red and 5 white flowers. A random sample of 6 flowers is drawn without replacement from the box. Find the probability that the sample contains 3 red flowers.
b) If X is binomially distributed with mean 8 and variance 4.8, then find the parameters of binomial distribution.
Question 2: Marks: 3+5=8
a) Suppose the number of defective screws produced by a machine per day follows Poisson distribution with parameter 2. What is the probability that, out of the total production of the day, there are at least one defective screw?
b) The Army reports that the distribution of head circumferences among soldiers is approximately normal with mean 23.4 inches and standard deviation 1.4 inches. What percent of soldiers have a head circumference between 21.0 inches and 24.0 inches?
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b) The Army reports that the distribution of head circumferences among soldiers is approximately normal with mean 23.4 inches and standard deviation 1.4 inches. What percent of soldiers have a head circumference between 21.0 inches and 24.0 inches?
X = Head circumference;
with X ~ N(23.4, 1.4) given:
Therefore
P( 21.0 < X < 24.0 ) = 0.6228
Spring2015_STA301_2 Assignment Solution BY Zain Nasar
thanks bro
Thanx Alot Zain Nasar bro for ur help
Thanxx Zain bhi :) :)
Yar yeh questions kis lectures me sy hain koi bata skta?
Hafiz Muhammad Haris from Assignment No: 2 (Lessons 28 – 30)
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