Answer:
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI
Step-by-step explanation:
The margin of error of a confidence interval is given by:
In which 
is the standard deviation of the population and n is the size of the sample.
z is related to the confidence level. The higher the confidence level, the higher the values of z, and thus, we wider the confidence interval is.
In this question:
The narrower C.I. is the 95%, and the wider is the 99%. So
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI
4.6 - 3.9= .7cm which is 7mm
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Cos m = .4685
cos^-1(.4685) = 62 degrees
angle L = 180-90-62 = 28 degrees
Answer:
Sheldon have left 
of food.
Step-by-step explanation:
Quantity of food = 
kg
Quantity used on strawberry plant = 
Quantity used on tomato plant = 
Food left = Total - used on strawberry - used on tomato
Food left = 
Food left = 
Food left =
Therefore,
Sheldon have left of food.
