Question

A billing company that collects bills for​ doctors' offices in the area is concerned that the percentage of bills being paid by medical insurance has risen.​ Historically, that percentage has been 31​%. An examination of 8,606 ​recent, randomly selected bills reveals that 32​% of these bills are being paid by medical insurance. Is there evidence of a change in the percent of bills being paid by medical​ insurance

Answer 1

Following are the responses to the given question:

Explanation:

`H_o : p =0.31\\\\H_a: p \\eq 0.31\\\\n = 8606 \\\\ p^ = 0.32`

`TS = \frac{(p^ - p)}{\sqrt{((pq)/(n))}}`

`= \frac{(0.32-0.31)}{\sqrt{((0.31* 0.69)/(8368))}}\\\\=(0.01)/(5.4)\\\\=0.00185\\\\`