Question

'NEED HELP WITH B AND C UNLESS YOU THINK I MADE AN ERROR ON A. RIGHT CLICK ON THE IMAGE AND SELECT "OPEN IMAGE IN A NEW TAB" FOR A LARGER CLEARER IMAGE. WILL UPVOTE ANY HELP, THANKS

According to a report, the mean of monthly cell phone bills was $48.01 three years ago. A researcher suspects that the mean of monthly cell phone bills is higher today. (a) Determine the null and alternative hypotheses. (b) Explain what it would mean to make a Type I error. (c) Explain what it would mean to make a Type Il error. (a) State the hypotheses. HO = $48.01 H # $ 48.01 (Type integers or decimals. Do not round.) (b) Explain what it would mean to make a Type I error. Choose the correct answer below. O A. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is higher than $48.01, when in fact the mean of the bill is higher than $48.01. OB. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $48.01, when in fact the mean of the bill is $48.01. OC. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is less than $48.01, when in fact the mean of the bill is less than $48.01. OD. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is higher than $48.01, when in fact the mean of the bill is $48.01. (c) Explain what it would mean to make a Type II error. Choose the correct answer below. O A. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is higher than $48.01, when in fact the mean of the bill is higher than $48.01. OB. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is higher than $48.01, when in fact the mean of the bill is higher than $48.01. OC. The sample evidence d the researcher to believe the mean of the monthly cell phone bill is higher than .01, when fact the mean of the bill is $48.01. OD. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is less than $48.01, when in fact the mean of the bill is less than $48.01.

Answer 1

Solution:

a)

H₀ : $\mu$ = $ 48.01

H₁ : $\mu$ > $ 48.01

b)

Type I error is

OD. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is higher than $48.01, when in fact the mean of the bill is $48.01.

Option D. is correct.

c)

Type II error is

Option B. is correct