Ouiz WAQ #8 Chapter 8 This Question: 1 pt Time Remaining: 04:23:38 Submit Quiz T

Question

Ouiz WAQ #8 Chapter 8 This Question: 1 pt Time Remaining: 04:23:38 Submit Quiz This Quiz: 7 pts possible In 1997, a survey of 960 households showed that 176 of them use e-mail. Use those sample results to test the claim that more a 0.05 significance level. Use this information to answer the following questions. a. Which of the following is the hypothesis test to be conducted? O A. Ho: p0.15 than 15% of households use e-mar Use H1: p-0.15 B. Ho:p:015 H,: p>0.15 O D. Ho: p 0.15 Hy: p#0.15 O F. Ho: p 0.15 H, p 015 O C. Ho: p 0.15 Hy: p

Explanation / Answer

The statistical software output for this problem is:

One sample proportion summary hypothesis test:
p : Proportion of successes
H0 : p = 0.15
HA : p > 0.15

Hypothesis test results:

Hence,

a) Hypotheses: Option B is correct.

b) z = 2.89

c) P - value = 0.002

d) Conclusion: Option A is correct.

e) Option A is correct.

Proportion Count Total Sample Prop. Std. Err. Z-Stat P-value p 176 960 0.18333333 0.011524431 2.8924061 0.0019

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