0 Question 28 v ' > ' B 1 pt '01 (D Details If the equation of the least squares regression line was computed to be 32 = 45.7 + 3.1:): , then the correlation cannot be less than 0. 0 false 0 true Check Answer 0 Question 27 v ' > ' 81 pt 0 1 (D Details If the equation of the regression line that relates percent blood alcohol, as , to reaction time in milliseconds, y , is g} = 36 1.3m , then the slope tells us that for every percent increase in blood alcohol, we can predict reaction time to go down by 1.3 milliseconds. 0 true 0 false Check Answer 0 Question 24 v ' > ' B 1 pt '0 1 (D Details A 2011 survey, by the Bureau of Labor Statistics, reported that 91% of Americans have paid leave. In January 2012, a random survey of 1000 workers showed that 89% had paid leave. The resulting p-value is 0.0271 ; thus, the null hypothesis is rejected. It is concluded that there has been a decrease in the proportion of people, who have paid leave from 2011 to January 2012. What type of error is possible in this situation? 0 type | 0 type || 0 neither 0 both ': CheckAnswer \\ 0 Question 22 v ' > W 81 pt '0 1 G Details A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 4% margin of error at a 99% confidence level, what size of sample is needed? When finding the z-value, round it to four decimal places. :1 l CheckAnswer \\ Question 20 C 1 pt 1 0 Details Express the confidence interval (12.6 % , 30 % ) in the form of p + E. % Check