A poll of 2,112 randomly selected adults showed that 90% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal...

Extracted text: A poll of 2,112 randomly selected adults showed that 90% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (e). Test of p = 0.91 vs p+0.91 Sample X Sample p 95% CI Z-Value P-Value 1 1911 2,112 0.904830 (0.892314,0.917345) - 0.83 0.406 a. Is the test two-tailed, left-tailed, or right-tailed? Left-tailed test Right tailed test Two-tailed test b. What is the test statistic? The test statistic is. (Round to two decimal places as needed.)