Econ 130:Fundamentals Of Applied Statistics Question Paper

Econ 130:Fundamentals Of Applied Statistics

Course:Fundamentals Of Applied Statistics

Institution: Egerton University question papers

Exam Year:2015

1)For each of the following,indicate the scale of measurement:
a)Extremely likable,likable,unpleasant,different
b)Temperature in degree celcius
c)Volume in cubic centimetres

2)For each of the following indicate whether its a quantitative or qualitative variable:
a)Skin colour
b)Sales volume of a furniture manufacturing firm
c)Sex of an individual

3)Explain what you understand by the term standard deviation

4)In a single toss of an honest die,calculate:
a)the probability of getting a 4
b)probability of not obtaining a 4
c)probability of getting a 3 and a 4

5)Calculate the probability of obtaining the following in the 3 draws from a well shuffled deck of cards:
a)4 kings with replacement
b)3 jacks without replacement
c)a spade,a heart and a diamond in any order with replacement
d) 2 queens without replacement

6)Determine the probabilities of the following:
a)that a ram chosen randomnly for slaughter from a group of ten rams will be black given that the group contains 2 black rams.
b)Winning a raffle with a single ticket when 50,000 tickets have been sold and entered in a draw.

7)Use the binomial formula to compute the probability of obtaining tails in the process of tossing an evenly balanced coin 8 times.

8)At a party convention there are 7 candidates under consideration for nomination as chairman and vice chairman.In how many ways could 2 candidates be chosen?

9)In a family of 3 children,compute the probability that there will be exactly 2 boys;assuming that the sexes are equally likely to occur in each birth and that the trials are independent.

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