Go Tools Window Help B Bri 100% , EC1102.2015midterm.pdf (page 3 of 9) a Search

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Go Tools Window Help B Bri 100% , EC1102.2015midterm.pdf (page 3 of 9) a Search Answer ALL questions QUESTION 1 Answer YES or NO to the following questions: (a) In the estimation of the population mean when the population is unknown, to construct a confidence interval estimate, we use the standard normal distribution. (b) In order to have a greater confidence in the estimation of the population mean, (c) As the sample size n increases, the standard error of the proportions will become (d) Sampling error occurs because data in the sample is representative of the popu- (e) The hypergeometric distribution is similar to the binomial distribution except that 4 Marks) 4 Marks) 4 Marks) 4 Marks) (4 Marks) (Total 20 marks) instead of a point estimate, we can use a deterministic estimate arger lation. sampling is done with replacement in the hypergeometric. QUESTION 2 888 ,a 5

Explanation / Answer

Question 1

(a) In that case we use t distribuion so the statement is false here.

(b) the statement is true here as to have a greater confidence in estimation, instead of having a point estimate, we use a deterministic estimate.

(c) The statement is false as sample size increases, standard error will decrease.

(d) The statement is not false but that is not the reason why sampling error occurs. But if we have to choose than we can that statement is true here.

(e) Yes, the statement is absolutely false as sampling is done without any replacement in hypergeometric but in binomial, it is done by using with replacement.

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