Question: narrowest interval in this set is 15.5 Sample size and margin of error Normally distributed with unknown n and known standard deviation = 10.

narrowest interval in this set is 15.5 Sample size and margin of

narrowest interval in this set is 15.5 Sample size and margin of error Normally distributed with unknown n and known standard deviation = 10. a. What would be the margin of er population mean u based on a ran a z confidence interval with a 95% z* = 1.960. b. What would be the margin of er

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