1. Accordlng to the report, the standard dev1atlon or monthly cell phone bIlls was $49.0?r three years ago. A researcher suspects that the standard deviation of monthly cell phone bills is higher today. {a} Determine the null and alternative hypotheses. Choose the correct answer below. On. H01p=$49.[l?: H110} 03349.0? B. HD : 0 = $49.01 H1: 0 Os $49.0? O. HO : o = $49.01 H1: Or: 2: $49.0? D. HD : p = $49.07; H1: p i $49.0? {b} Explain what it would mean to make a Type I error. Choose the correct answer below. a A. The sample evidence did not lead the researcher to believe the standard deviation 01 monthly cell phone bills is higher than $49.01 when in fact the standard deviation of bills is higher than E}: $49.01 B. The sample evidence led the researcher to believe the standard deviation of monthly cell phone bills is higher than $49.01when in tact the standard deviation of bills is $49.01 G C. The sample evidence led the researcher to believe the standard deviation of monthly cell phone bills is less than $49.01 when in fact the standard deviation of bills is $49.07. {c} Explain what it would mean to make a Type II error. Choose the correct answer below. 9 A. The sample evidence did not lead the researcher to believe the standard deviation of monthly cell phone bills is higher than $49.01 when in fact the standard deviation of bills is higher than 9 $49.01 B. The sample evidence led the researcher to believe the standard deviation of monthly cell phone bill is higher than $49.01when in tact the standard deviation of bills is higher than $49.01 0 C. The sample evidence did not lead the researcher to believe the standard deviation of monthly cell phone bills is less than $49.01 when in fact the standard deviation of bills is less than $49.01