New tab | Other favorites =zyBooks My library > QNT/275T: Statistics for Decision Making home > 5.7: Confidence intervals for population means zyBooks catalog ? Help/FAQ Bill Mccarthy Feedback? CHALLENGE ACTIVITY 5.7.1: Confidence intervals for population means. 380506.1429276.qx3zay7 Jump to level 1 V The additional growth of plants in one week are recorded for 11 plants with a sample standard deviation of 4 inches and sample mean of 10 inches. t* at the 0.10 significance level = Ex: 1.234 # Margin of error = Ex: 1.234 Confidence interval = [ Ex: 12.345 Ex: 12.345 ] [smaller value, larger value] 2 Check Next Feedback? How was this section? QI Provide feedback O 5:18 PM 2/5/2022 8