The 'part b' of this question is incomplete. I got the complete form of 'part b ' from google as below:
(b) Find a 90% confidence interval for the mean increase in production of interferon gamma after drinking tea for one week.
Answer:
a) The most appropriate method for this analysis is paired data difference in means (option A).
b) The 90% Confidence interval is 62.3 to 523.7.
Step-by-step explanation:
Given details:
Sample= 5
Mean difference: \bar{X_d}=293
Difference standard deviation: S_d=242
a) The most appropriate method for this analysis is paired data difference in means.
b) t value at 90%= 2.132
CI = dbar +/- t *(sd/sqrt(n))
= 293 +/- 2.132 *(242/sqrt(5))
= (62.3 ,523.7)
The 90% Confidence interval is 62.3 to 523.7
