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STA301 Statistics and Probability

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STA301 Statistics and Probability

STA301 Statistics and Probability.Download/upload Video Lectures, Handouts, Helping Materials, Assignments Solution, Online Quizzes, GDB, Past Papers, Solved Papers and more….

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Comment by amina on November 19, 2014 at 12:23am

Assignment No.1 (Course STA 406)

 Fall 2014 (Total Marks15)

 

  • The assignment is being uploaded to build up the concepts about the point estimation and confidence interval.

                                                                                                                                                                                                                                             

 

Question 1:                                                                                                                                           (Marks: 2+5=7)

  1. a.      Let U and V are two unbiased estimators of λ and Variance (U) ≤ Variance (V), then which estimator is more efficient and why?

 

  1. b.      A mobile company XYZ wants to conduct a survey to find the proportion P of those customers that are happy with the purchase of their new mobile phone. The company took a random sample of 1000 customers who recently purchased the new mobile phone. They found that among those, 400 customers were happy with their purchase. Find the 95% Confidence Interval for P?

 

 

 

 

 Question 2:                                                                      

  1. a.      An independent random sample of 50 and 70 animals from two farms show the average animal weight to be 50 kg and 40 kg with standard deviation of 2.5 kg and 1.5 kg respectively. Assuming normality, construct a 95% confidence interval for the expected difference in the weights.

 

 

  1. b.      The standard deviation of the lifetime of certain TV picture tubes is estimated as 150 hours. How much large a sample must be taken in order to be 99% confident that the error in the estimated means lifetime will not exceed 25 hours.

 

 

-End-

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Comment by + βιит-є-Aȿɨƒ on October 2, 2014 at 10:09am

Nice group

Comment by +★ HAMMAD ★ on August 24, 2014 at 5:56am
Keep it up
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Nice group keet it up
Comment by +★ HAMMAD ★ on August 24, 2014 at 5:55am
Nice group
Comment by Sahar on August 18, 2014 at 4:18pm

muje Sta ke handouts chahye .... koi yaha up;oad kar de .....plz jaldi

Comment by Beat Of N!NG on August 3, 2014 at 4:55pm

ppllzzzzzz

Comment by Beat Of N!NG on August 3, 2014 at 3:42pm

aslam o alaikum i m new i need help plz help me in sta301

Comment by Internship COMI619 M.Com on February 6, 2014 at 2:16pm

06022014194.jpg

Salam To all....yar ye example book page 221 pey hey es k hlaf calculation samjh nahi i koi bta skta hey k ye calculation kesey hoi...plzzzz ye 210 kesey aya?plzzzzzzzz upar wali to samhj agai lakin 210 nahi :(

 

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