Solve the problem Round the point estinate to the neest 13) Find the point estim

Question

Solve the problem Round the point estinate to the neest 13) Find the point estimate of the of 886 people. 76 people had heanng aids propertion of people wtho wear hearing aids it, in a random sample A) 0.914 B) 0079 C0086 Use the given degree of confidence and sample deta 14) A survey of 565 woers in one stahe neveals that 408 ve 14) 00444p 500 Use the confidence level and sample data to find a confidence intervall answer to the same number of decimal places as the sumple mean 15) A random sampile of 90 light bulhs hd a ean lde of 4 405 hours with a standand deviation of1- Use the given degnee of confidence and sample data to comstruct a confidence interval for the popelation mean y Asume that the pogulation has a mormal distributon se) the true men D 1953mg 2127mg 15) The 152 153 154 2 )222 3280 0118 83

Explanation / Answer

13. Correct Answer: Option (C) 0.086
since 76/886 = 0.085778

14. Correct Answer: Option (D)
since
95% Confidence interval:
0.4384094 < p < 0.5049432

15. Correct Answer: Option (D)
since
95% Confident the population mean is within the range:
457.7691 < mean <472.2309

16. Correct Answer: Option (B)
since
95% Confident the population mean is within the range:
10.80936 < mean <17.39064

17. Correct Answer: Option (B)
since
95% Confident the population mean is within the range:
195.2319 < mean <212.7681

18.Correct Answer: Option (A)
since

98% Confident the population mean is within the range:
15.0649 < mean <15.5101

19. Correct Answer: Option (C)
Critical t: ±3.2498

20. Correct Answer: Option (D)
since
Margin of error, E = 1.43873

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