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1. The probability that a couple will have a child with black hair is 0.6.
If this couple has 7 children what is
(a) the probability that exactly 3 of these children have black hair ?
(b) the probability that no more than 2 of their children have black hair ?
(c) the probability that none of the children have black hair
(d) what is the mean number of their children that have black hair and what is the variance ?
2. The service life of an incandescent light bulbs used domestically was investigated.
It was found that a light bulb can last up to 3 years, and the probability distribution of the number of years a light bulb was used before failure is given below:
(i) What is the mean service life of a light bulb?
(ii) What is the variance and standard deviation of a service life of a light bulb?
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Recently I had an insight regarding the difference between squares of sequential whole numbers and the sum of those two whole numbers. I quickly realized the following: x + (x+1)
how to see shares and dividends of a company and are they seen day wise?
Example of Integration by Parts - Integration techniques Illustration1: Evaluate the following integral. ∫ xe 6x dx Solution : Thus, on some level, the difficulty
Write an algebraic expression for “Julie runs three miles less than twice the number of miles,
WRITE the condition that should be fulfilled by two matrices A&B to get the product AB and BA
what is the greatest projection range down an inclined plane? how we will calculate that?
A class has 175 learners. The given table describes the number of learners studying one or more of the subsequent subjects in this case Subjects
a) Complete the inventory record below for an FOQ of 100 units. b) Talk about weaknesses of MRP. List at least 3 and describe each in a sentence or two. Item: A
a die was rooled 500 times and number of times 4 came up was noted if the imperical probability calculated from this information 7_10
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