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From a random sample of 35 days in a recent year, the closing stock prices for...

From a random sample of 35 days in a recent year, the closing stock prices for Hasbro had a mean of $23.20. Assume the population standard deviation was $4.34.  Identify the following values for calculating the 90% confidence interval estimating the population mean.

(matching)

____Critical z value a: 1.645

____Margin of error E b. 1.207

____Lower boundary of interval c. 24.407

____Upper Boundary of Interval d. 21.993
Math   Statistics-And-Probability   
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