Question 28 3.3 points Save Ans Provide an appropriate response. In a poll of 50

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Question 28 3.3 points Save Ans Provide an appropriate response. In a poll of 500 voters in a certain city, 60% said that they backed a bill which would limit growth and development in their city. The margin of error in the poll was reported as 5 percentage points (with a 95% degree of confidence). Which statement is correct? O The sample size is too small to achieve the stated margin of error. The reported margin of error is consistent with the sample size. O For the given sample size, the margin of error should be smaller than stated O There is not enough information to determine whether the margin of error is consistent with the sample size

Explanation / Answer

28) here std error =(p*(1-p)/n)1/2 =0.0219

for 95% CI ;critical z =1.96

hence margin of error =z*Std error =0.0219*1.96=0.0429~4.29%

for given sample size margin of errior should be smaller than stated is right

29)

p(at least 2 tails)=P(HTT, THT,TTH,TTT)=4/8 =1/2

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