8234 3) 460 randomly selected light tnalbe were ested in a leorasory, 315 lasted

Question

8234 3) 460 randomly selected light tnalbe were ested in a leorasory, 315 lasted re thousan Point estimate of the Proportion of all light h11-that last A) 0.685 man sro ,own 8) 0.315 C) 0 683 D 0.406 Use the given degree of contidence and sample dats to construct a contidence 4) n-107, x-51; 88% confidence interval for the pos C) 0.402 p0.552 0.398p 0.55 D) 0.401 p0.553 5) When 319 college students are randomly selected and surveyed, it is found that 120e a 99% confidence interval for the true proportion of all college students who own a A) 0.332

Explanation / Answer

6. Option (B)

7. Option (C)

Actual value is 1.88 but we do not have this in our options list

8. Option C

9) Option (C)

Given CI Level 90% Margin of Error(ME) 3.7 std. dev. 28 z-value of 90% CI 1.6449 n = (z*sigma/ME)^2 155

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