Mathematics, 05.05.2020 09:47 NeverEndingCycle
Drink Tea for a Stronger Immune System
We have seen that drinking tea appears to offer a strong boost to the immune system. In a study extending the results,1 blood samples were taken on 5 participants before and after one week of drinking about five cups of tea a day (the participants did not drink tea before the study started). The before and after blood samples were exposed to e. coli bacteria, and production of interferon gamma, a molecule that fights bacteria, viruses, and tumors, was measured. Mean production went from 155 pg/mL before tea drinking to 448 pg/mL after tea drinking. The mean difference for the 5 subjects is 293 pg/mL with a standard deviation in the differences of 242. The paper implies that the use of the t-distribution is appropriate.
1 Adapted from Kamath, A., et. al., ‘‘Antigens in tea-beverage prime human Vγ2Vδ2 T cells in vitro and in vivo for memory and non-memory antibacterial cytokine responses," Proceedings of the National Academy of Sciences, May 13, 2003; 100(10): 6009-6014.
(a) Which method is most appropriate for this analysis?
A. Paired data difference in means
B. Difference in means with two separate groups
(b) Find a confidence interval for the mean increase in production of interferon gamma after drinking tea for one week.
Answers: 3
Mathematics, 21.06.2019 15:30
For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary
Answers: 1
Mathematics, 21.06.2019 19:30
Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?
Answers: 2
Mathematics, 21.06.2019 21:00
To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay
Answers: 1
Drink Tea for a Stronger Immune System
We have seen that drinking tea appears to offer...
We have seen that drinking tea appears to offer...
Mathematics, 16.10.2020 20:01
Biology, 16.10.2020 20:01
Mathematics, 16.10.2020 20:01
English, 16.10.2020 20:01
History, 16.10.2020 20:01
Mathematics, 16.10.2020 20:01
Mathematics, 16.10.2020 20:01
Mathematics, 16.10.2020 20:01
Spanish, 16.10.2020 20:01
Mathematics, 16.10.2020 20:01