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A poll of 2,072 randomly selected adults showed that 92% of them own cell phones. The technology display below results from a test of the
A poll of 2,072 randomly selected adults showed that 92% of them own cell phones. The technology display below results from a test of the claim that 94% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 signicance level to complete parts (a) through (e). Test of p = 0.94 vs p i 0.94 Sample X N Sample p 95% Cl Z-Value P-Value 1 1905 2,072 0.919402 (09039910934806) - 3.95 0.000 ( a. Is the test two-tailed, left-tailed, or right-tailed? O Left-tailed test 0 Two-tailed test 0 Right tailed test b. What is the test statistic? The test statistic is D. (Round to two decimal places as needed.) 6. What is the P-value? The P-value is . (Round to three decimal places as needed.) A poll of 2,072 randomly selected adults showed that 92% of them own cell phones. The technology display below results from a test of the claim that 94% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e). Test of p = 0.94 vs p # 0.94 Sample X N Sample p 95% CI Z-Value P-Value 1 1905 2,072 0.919402 (0.903997,0.934806) - 3.95 0.000 . . d. What is the null hypothesis and what do you conclude about it? Identify the null hypothesis. O A. Ho: P = 0.94 O B. Ho: p # 0.94 O C. Ho: p > 0.94 O D. Ho: P
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