A simple random sample of 64 observations was taken from a large population. The sample mean and the standard deviation were determined to be 320 and 120 respectively. The standard error of the mean is: a. 1.875
b. 40
c. 5
d. 15
e. None of the above

The correct option is d

Step-by-step explanation:

From the question we are told that

    The sample size is  n = 64

    The mean is  

    The standard deviation is

Generally the standard error of the mean is mathematically represented as  

=>    

=>    

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

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hreryryrranswer:

step-by-step explanation: