A random sample of 18 observations taken from a normally distributed population produced the following data: 28.4 27.3 25.5 25.5 31.1 23.0 26.3 24.6 28.4
37.2 23.9 28.7 27.9 25.1 27.2 25.3 22.6 22.7
What is the point estimate of μ?
Make a 99% confidence interval for μ.
What is the margin of error of estimate for μ in part b?

add an image, and i will answer

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places