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In a survey of 2, 315 ​adults, 1,913 reported that​ e-mails are easy to​ misinterpret, but...

In a survey of 2, 315 ​adults, 1,913 reported that​ e-mails are easy to​ misinterpret, but only 1, 213 reported that telephone conversations are easy to misinterpret. Complete parts​ (a) through​ (c) below.

a. Construct a​ 95% confidence interval estimate for the population proportion of adults who report that​ e-mails are easy to misinterpret.

Math   Statistics-And-Probability   
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Answer #1

Let "x" be e-mails which is easy to​ misinterpret

Refer Z-table or use excel function "=NORM.S.INV((1-0.025))" to find the Z-value.

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