| 8.2.81Question HelpIn a study, the mean number of days that 124 adolescents in substance abuse treatment used medical marijuana in the last 5 months was 119.17. Assuming thepopulation standard deviation is 34 days, a 95% confidence interval for the mean number of days, µ, of medical marijuana use in the last 5 months of all adolescents insubstance abuse treatment is from 113.19 days to 125.15 days; this interval's margin of error is 5.98 days. Complete parts (a) through (d) below.Click here to view page 1 of the table of areas under the standard normal curve.Click here to view page 2 of the table of areas under the standard normal curve.a. The mean number of days that 31 adolescents in substance abuse treatment used medical marijuana in the last 5 months was 115.54. Find a 95% confidence intervalforbased on that data.The 95% confidence interval is fromday(s) today(s).(Round to two decimal places as needed.) 9.4.77-PQuestion HelpA sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the 5%significance level.x = 28, n = 37, o = 5, Ho: µ = 31, Hạ:H<31The test statistic is z = - 3.65 .(Round to two decimal places as needed.)The P-value is.(Round to three decimal places as needed.)

Name: | 8.2.81Question HelpIn a study, the mean number of days that 124 ado
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Description: | 8.2.81Question HelpIn a study, the mean number of days that 124 adolescents in substance abuse treatment used medical marijuana in the last 5 months was 119.17. Assuming thepopulation standard deviation is 34 days, a 95% confidence interval for th