Solve: 5x^2 + 100 = 0 A. +2V5 B. +10V5 C. +2iV5 D. +100v5
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Answer:
The 90% confidence interval is
Step-by-step explanation:
From the question we are told that
The sample size is n = 1007
The sample proportion is
From the question we are told the confidence level is 90% , hence the level of significance is
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Generally from the normal distribution table the critical value of is
Generally the margin of error is mathematically represented as
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Generally 90% confidence interval is mathematically represented as
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