MTH302 Current Final Term Shared by nazia yasmeen Fall 2013 File 1

 Subjective part
  Three horses A, B, C are in a race; A is twice as likely to win as B, and B is
twice likely to win as C then find the probability that B or C wins 3 marks

In a school, 50% students study science subjects and 30% of them
study biology. What is the probability that the student studies
Biology?

The ages of 5 students in a population are 12, 16, 10, 14 and 13.
Considering all possible samples of size two which can be drawn with
replacement from this population, find (marks 5)
a) The mean age.
b) The standard deviation of the students

What will be y-intercept ‘b’ in the regression line Y=aX+b if Y = 9, X = 3
and a = 2 ?(dear question yahe tha per valve change thin. Marks 2
Solution:
9 = (2 x 3) + b
b = 9 – 6
b = 3 will be the Intercept

Objective part
 Season variation = Actual – Trend ka question tha.actual amount be thi and trend be thi.
 3x2 + 5x – 7 is --------------- expression.
► Monomial
► Binomial
► Trinomial
► Linear

In the equation Y‾ = 2 +3X‾ the intercept is
► 4
► 1
► 3
► 2

There are two graphs G1 and G2. The graph G1 has r = 0.9 and the graph G2 has r =
0.5, then what result do you take out from it?
► G1 is more scattered than G2.
► G1 is less scattered than G2.
► G1 and G2 are equally scattered.
► No result can be drawn from the given data.

The point where a straight line cuts the X-axis is called
► slope
► starting point
► y-intercept
► x-intercept



If the price of an English novel decreases from Rs 255.50 to Rs 230.25. What
is the percentage decrease?
► 8.9 %
► 9.9 %
► 10.9%
► 11.9 %
Ref: Change = Final value-initial value
Change = 255.50-230.25=25.25
So percentage change = (change/initial value)*100%
Percentage change = (25.25/230.25)*100 =10.9%


A statistical measure of the variability of a distribution around its mean is referred to as
► A probability distribution
► The standard deviation correct
► The expected return
► Coefficient of variation

The moving averages represent ------------------
► Time series variations
► Co-efficient of variations
► Statistical Dispersion
► Absolute deviation

If Original Price = Rs. 3120 and Markdown Rate = 6.3 % then the Sale
Price is equal to
► 2933.44
► 3033.2
► 2910.4
► 3316.56
Sol: sale price = original or current price (1-%markdown)
Sale price = 3120 (1-6.3%) =2933.44
See page 103

Net price =
► List price +trade discount
► List price - trade discount 104
► List price /trade discount
► List price * trade discount

Seasonal variation = ….
► Actual – trend Ref 252
► Actual + trend
► Actual * trend
► Actual / trend

For two tail test, when α = 0.10  the value of Z is
► } 1.96
► } 1.645 OR
► } 2.326
► } 2.575

For two tail test, when α = 0.05 the value of Z is
► } 1.96
► } 1.645
► } 2.326
► None of these


C100= ……..100
► 100
► 10000
► 0
► 1

The moving averages represent ------------------
► Time series variations
► Co-efficient of variations
► Statistical Dispersion
► Absolute deviation

How many arrangements can be made of the letter PAKISTANI
► 100108
► 10080
► 10962
► 90720

If the population standard deviation is not known and the sample size is
large(n>=30),then the Test statistic to be used is -------------
► (a) t-test
► (b) z-test
► both (a) and (b)
► none of these

The maximum value in an Ogive is always
► 100%. 182
► an upper class boundary.
► a discrete variable.
► All choices are true

Standard deviation of the sampling distribution tells us
► how the distribution can be calculated
► how the sample values differ from the mean doubt
► how the error canbe calculated
► none of these

Which of the following is the system of linear equations?
► 4 x + 6 y = 9
► 3 x2 + 5 y2 = 7 , x + y = 8
► 5 x + 7 y = 12, 2 x + 8 y = 10
► 2 x 2 – 5 x + 7 = 0

Store A marked down a $ 50 perfume to $ 40 with markdown of
$10
The % Markdown is
► 10%
► 20%
► 30%
► 40%
Dear fellow jatna muje yad tha lakh daya best of luck.