When the tissue around teeth becomes inflamed the tissue bleeds more easily and this is an indication of gum disease The

Question

When the tissue around teeth becomes inflamed the tissue bleeds more easily and this is an indication of gum disease The severity of bleeding can be measured by a bleeding score that is determined by the percentage of teeth for which bleeding occurs when the tissue surrounding the tooth is probed In terms of dental health lower bleeding scores are better than higher bleeding scores The authors of a paper wondered if the nutrients found in kiwis might reduce bleeding To investigate 25 adult participants agreed to consume 2 kiwis a day for a period of 2 months A bleeding score was recorded for each participant at the beginning of the study period and again after 2 months of kiwi consumption Because this resulted in paired samples differences in bleeding scores before after were analyzed It was reported that the sample mean difference was X 6 68 and the standard deviation of the differences was s 11 80 Assume that the 25 study participants can be considered as representative of the population of adults LUSE SALT 2 011 S Need Help MY NOTES Use the information given above to construct a 90 confidence interval for the difference in bleeding score before and after 2 months of kiwi consumption Use Before After Enter your answer using interval notation Round your numerical values to four decimal places Interpret the interval We are 90 confident that the true difference in mean bleeding score before and after 2 months of kiwi consumption falls within this interval The bounds mean score was higher before kiwi consumption Read It PRACTICE ANOTHE the interval suggest the

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