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Please Comment with your STA301 Final term papers questions.

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Sta301 paper 8:00 AM

A coin is tossed three time find prob

At least 1 head

Sampling error?

Bowley coofficent? Mean. Mode and variance r given

Variance is unknown find var and t rest

Z test

Find A^B here p(a) p (b) is given

Find varXY var x and var y given

Or aik hypothesis ke statement lihkne the

Zada questions 30 or 40 ma sa i

Posts: 158

Threads: 118

Joined: May 2016

Sta301 today's paper

Mean deviation=? Options 0.5sigma or 0.75sigma 2) if X and Y are independent then var(X-Y)=? 3) proportion of males in pak is at least 0.48 the what is alternative hypothesis I did P is less than 0.48 4) if sigma is doubled then what will be the effect on confidence intetval I did confidence interval will be doubled. 6)mew is less tahn mewo and alpha =0.05 then critical region will be? I did z is greater than 0.05. 7)Var(4X+5)=4VarX+5. 8)marginal probability distribution is? I did P(A/B). (9) if mew is less than mewo and alpha is 0.01 then z=? Idid z is greater than z0.01.These were the mcqs and rest of the mcqs were direct and conceptual P50? When n=10 and all values are 5. I did

Q1) Poportion of smokers in the cityof lahore p^=X/n =300/500

Q2) first moment ratio when mew2 =0.2 mew3=0 solution:mew3square/mew2cube=0/(0.2)cube=0

Q3)What type of distribution will be used to determine proportion of smokers and non smokers I think binomial distribution as it will result in two mutually exclusive events success and failure and all trials are independent

Q4) P(A union B) for not mutually exclusive events when P(A)=0.30 and P(B)=0.55 P(A intersection B)0.25

=0.30+0.55-0.25=0.6

Q5) determine n if zalpha by 2 is 1.96 andq^= 1-p^=0.84 and e=0.05 solution: p^=0.16 and n=z alpha by 2 square/e square *p^q^=207(may be wrong).

Q6) Values of X and corresponding P (X) were given and required was to determine P(X is less than 4) and P(X is greater than 4 and less than and equal to 8)

Q7) calculate cumulative probability distribution when X and corresponding probabilities were given

Q8) write moment ratios formula and values for normal distribution

Q9) N=5n=3 0,2,3,3,5 construct samples without replacement

Q10) difference between chebychev in equality and empirical formula

Q11)find E(X) and Var(X) when x is between -1 and 2. And g(x) is 1/3x^2. Solution: E(X)= 0.25 and E(X)^2=2.25 var(X)= 2.13

Q12) Define inferential statistics.

Q13) A process is in control average packing is 6oz s.d is 0.2 when a sample of 100 is selected average of sample is 6.1oz. Now determine whether the process is controlled or not? Z=1.645 given

Time management is very important as the paper is quite lengthy.