Find the critical value zc necessary to form a confidence interval at the level of confidence shown below. Zc=______________. Round to two decimal places. c= 0.91

Consider the following data on price ($) and the overall score for six stereo headphones tested by a certain magazine. The overall score is based on sound quality and effectiveness of ambient noise reduction. Scores range from 0 (lowest) to 100 (highest). Brand Price ($) Score A 180 76 B 150 69 95 59 70 58 E 70 42 35 26 (a) The estimated regression equation for this data is ý = 24.599 + 0.304x, where x = price ($) and y = overall score. Does the t test indicate a significant relationship between price and the overall score? Use a = 0.05. State the null and alternative hypotheses. O Ho: B, + 0 H: B, = 0 O Hoi Bo#0 H3: Bo = 0 O Ho: Bo = 0 H,: Bo = 0 O Ho: B1 = 0 H3: Bq 0 O Hoi Bqz 0 H: B, < 0 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = What is your conclusion? O Reject Ho. We cannot conclude that the relationship between price ($) and overall score is significant. O Do not…

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 79.7 inches tall. (to 4 decimal places) X μl Use the formula Z σ the standard deviation, and x is the man's height. where is the mean, o is