what is the probability of seeing a sample mean for 21 observations less or equal to the sample mean that we observed

Step-by-step explanation:

The missing parameters are:

--- population

--- population mean

-- population standard deviation

Required

First, calculate the sample standard deviation

Next, calculate the sample mean

So:

So, we have:

Calculate the z score

So, we have:

From the z table

So:

b or 2, just plug these equations into your graphing calculator then check the graph to see the image. if it matches up then that's your answer!

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.