Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1235...

Question

Question

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1235...

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1235 adults, 91% said that they have a cell phone. Find the value of the test statistic.

The value of the test statistic is

math Statistics-And-Probability

Add a comment Improve this question Transcribed image text

Answer 1

✔ Recommended Answer

Answer #1

Given :

Number of sample = n = 1235

Sample proportion = ${\hat{p}}$ = 0.91

Hypothesis test :

The null and alternative hypothesis is

Ho : p = 0.97

Ha : p < 0.97

Test statistic :

z = ( ${\hat{p}}$ - p)/[√p(1-p)/n]

= (0.91 - 0.97)/[√0.97(1-0.97)/1235]

= -0.06/0.00485

= -12.36

Therefore the value of test statistic is z = -12.36

Add a comment

Answer 2

Similar Homework Help Questions

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1093...

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1093 adults, 90% said that they have a cell phone. Find the value of the test statistic.
Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1114...

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1114 adults, 88% said that they have a cell phone. Find the value of the test statistic.
Claim: Fewer than 91% of adults have a cell phone. In a reputable poll of 1079...

Claim: Fewer than 91% of adults have a cell phone. In a reputable poll of 1079 adults, 83% said that they have a cell phone. Find the value of the test statistic.

Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1210...

Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1210 adults,88 % said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is
Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1006...

Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1006 adults, 88% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is
Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1086...

Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1086 adults, 85% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is nothing.

Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1179...

Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1179 adults, 89% said that they have a cell phone. Find the value of the test statistic.
Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1122 adults

Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1122 adults, 89% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is _______ (Round to two decimal places as needed.)
Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1200...

Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1200 adults, 90% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is _______ (Round to two decimal places as needed.)

Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1226...

Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1226 adults, 90% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is | (Round to two decimal places as needed.)

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1235...

Homework Answers

Add Answer to:
Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1235...

Post as a guest

Earn Coins

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1093...

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1114...

Claim: Fewer than 91% of adults have a cell phone. In a reputable poll of 1079...

Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1210...

Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1006...

Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1086...

Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1179...

Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1122 adults

Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1200...

Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1226...

Claim: Fewer than 97​% of adults have a cell phone. In a reputable poll of 1235...

Homework Answers

Add Answer to: Claim: Fewer than 97​% of adults have a cell phone. In a reputable poll of 1235...

Post as a guest

Earn Coins

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1235...

Add Answer to:
Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1235...