Business Statistics (1)

Question

Business Statistics (1)

Please refer below link for pdf questions.

https://pdf.ac/w7cHN

Answer 1

Hi Darla,

For number 1, the null and alternate hypothesis do not look correct to me. I would write

Ho: µ=1200

H1: µ≠1200

and answer false.

2.

Z = (1175 - 1200)/(120/sqrt(80)) = -1.863

3

p-value = 2*normalcdf(-1000000, -1.8634, 0, 1) = 2*0.0312 = 0.0624

We never say that Ho is accepted. The correct response is that you fail to reject Ho.

It's possible that your particular professor does things differently,but my answers reflect how it's usually stated.

Let me know if you have any questions.

Dian