Researchers are interested in the effect of a certain nutrient
on the growth rate of plant seedlings. Using a hydroponics grow
procedure that utilized water containing the nutrient, they
planted six tomato plants and recorded the heights of each plant 14
days after germination. Those heights, measured in millimeters,
were 55.7, 59.8, 61.3, 63.5, 64.6 and 68.7. Complete parts a
through d below. a. Using technology, find the 95% confidence
interval for the population mean. (Round to one decimal place
as needed.)
Using technology, construct a 99% confidence
interval.
(Round to one decimal place as needed.)