It is known that for a = 0.1.za/2= 1.645. Using this fact, solve the following problem. A sample of 43 companies was taken to find out how many companies went bankrupt over the period of 1 years. The proportion of the companies which filed bankruptsy appeared to be 0.20 in the sample. What is the left boundary of 90% confidence interval to estimate the proportion of bankrupt

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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QUESTION 5
It is known that for a = 0.1, Za/2= 1.645. Using this fact, solve the following problem. A sample of 43 companies was taken to find out how many companies went bankrupt over the period of 10
years. The proportion of the companies which filed bankruptsy appeared to be 0.20 in the sample. What is the left boundary of 90% confidence interval to estimate the proportion of bankrupt
companies over the period of 10 years? Assume that the conditions for the samling distribution to be approximately normal are satisfied. Round your answer to 4 decimals.
Transcribed Image Text:QUESTION 5 It is known that for a = 0.1, Za/2= 1.645. Using this fact, solve the following problem. A sample of 43 companies was taken to find out how many companies went bankrupt over the period of 10 years. The proportion of the companies which filed bankruptsy appeared to be 0.20 in the sample. What is the left boundary of 90% confidence interval to estimate the proportion of bankrupt companies over the period of 10 years? Assume that the conditions for the samling distribution to be approximately normal are satisfied. Round your answer to 4 decimals.
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