Susan is conducting a survey about the electric bills of households in her city. From the electric company, she found that the population mean is $98.75 with a standard deviation of $10.45. Susan has a sample size of 60,
Complete the equation that Susan can use to find the interval in which she can be 68% sure that the sample mean will lie.
109.2
98.75
60
7.75
88.3
10.45
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1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

the figure is a concave pentagon.

step-by-step explanation:

in mathematical context, a pentagon is a flat, two-dimensional closed shape (polygon) with 5 straight sides and 5 angles.

now a pentagon is said to be concave if one or more corners bend inwards and at least one of its angles is 180 degrees or more than 180 degrees.

in the given figure, we can see that we have a corner which is bending inwards and an angle which is clearly greater than 180°. therefore, it is a concave pentagon.