Question

Listed below are the amounts of mercury​ (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 98​% confidence interval estimate of the mean amount of mercury in the population.

Does it appear that there is too much mercury in tuna​ sushi?

0.56 0.75 0.11 0.98 1.28 0.53 0.94

how do I calculated using stats crunch or the ti83 calculator

Answer 1

98​% confidence interval estimate of the mean amount of mercury in the population usingTI-83

First enter the given numbers in L1 list of TI-83

Press STAT ---> Select 1:Edit and hit enter ---> Plug the values one by one

     

Press STAT ---> Scroll to TESTS ---> Scroll down to T interval and hit enter

Select Data and hit enter , then for List plug L1 ( Press 2ND key then 1 )

Then directly scroll to C-level and plug 0.98

Scroll to calculate and hit enter

98​% confidence interval estimate of the mean amount of mercury is ( 0.2853 , 1.1861 )