Question

Please provide answers for (a), (b), & (c)

Choices for fill in (a)

Ho & H1 have same fill in choices:

  

According to a report, the standard deviation of monthly cell phone bills was $48.52 three years ago. A researcher suspects that the standard deviation of monthly cell phone bills is different from today (a) Determine the null and alternative hypotheses. make a Typel error. make a Type Il error. (b) Explain what it would mean (c) Explain what it would mean (a) State the hypotheses. V$ Ho $ H (Type integers or decimals. Do not round.) (b) Explain what it would mean to make a Type l error. Choose the correct answer below. O A. The sample evidence led the researcher to believe the standard deviation of the monthly cell phone bill is different from $48.52, when in fact the standard deviation bill is $48.52. OB. The sample evidence led the researcher to believe the standard deviation of the monthly cell phone bill is higher than $48.52, when in fact the standard deviation of the bill is $48.52. f the O C. The sample evidence did not lead the researcher to believe the standard deviation of the monthly cell phone bill is higher than $48.52, when in fact the standard deviation of the bill is higher than $48.52. D. The sample evidence did not lead the researcher to believe the standard deviation of the monthly cell phone bill is different from $48.52, when in fact the standard deviation of the bill is different from $48.52. (c) Explain what it would mean to make a Type Il error. Choose the correct answer below. A. The sample evidence did not lead the researcher to believe the standard deviation of the monthly cell phone bill is different from $48.52, when in fact the standard deviation of the bill is different from $48.52 O B. The sample evidence led the researcher to believe the standard deviation of the monthly cell phone bill is different from $48.52, when in fact the standard deviation bill is $48.52. O C. The sample evidence did not lead the researcher to believe the standard deviation of the monthly cell phone bill is higher than $48.52, when in fact the standard deviation of the bill is higher than $48.52 O D. The sample evidence led the researcher to believe the standard deviation of the monthly cell phone bill is different from $48.52, when in fact the standard deviation of the the is different from $48.52 σ μ p r v A V

Answer 1

(a)
H0: $\sigma$=$48.52

H1: 48.52

a t

(b)

Type I Error: Rejection of a true null hypothesis

Suppose in reality,$\sigma$=48.52. But, we wrongly conclude that 48.52

a t

So,

Correct option:

A. The sample evidence led the researcher to believe the standard deviation of monthly cell phone bill is different from $48.52, when in fact the standard deviation of the bill is $48.52.

(c)

Type II Error: Failure to reject a false null hypothesis

Suppose in reality,$\sigma$$\neq$48.52. But, we wrongly conclude that $\sigma$= 48.52

So,

Correct option:

A. The sample evidence did not lead the researcher to believe the standard deviation of monthly cell phone bill is different from $48.52, when in fact the standard deviation of the bill is different from $48.52.