Click the icon to view the table of critical t-values. OC. One can be confident that the all cities have a travel tax between S D. There is a % probability that the mean travel tax for all cities is between (e) What would you recommend to a researcher who wants to increase the precision of the interval, but pes not have access to A. The researcher could increase the sample mean OB. The researcher could increase the level of confidence OC. The researcher could decrease the level of confidence. 00. The researcher could decrease the sample standard deviation. onal data?

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