Ajar of peanuts is supposed to have 12 ounces of peanuts. The lling machine inevitably experiences uctuations in lling, so a quality-control manager randomly samples 12 jars of peanuts from the storage facility and measures their contents. She obtains the accompanying data. Complete parts (a) through (d) below. Click here to view the peanut jar data. Click here to view the table of critical values of the chi-square distribution. Click here to view the standard normal distribution table (page 1) Click here to View the standard normal distribution table (page 2) (a) Verify that the data are normally distributed by constructed a normal probability plot. Choose the correct normal probability plot below. v t d - t d - A t d - Id - 175 expece zscore Q 175 expece zscore Q 128 expece ZSCOI: Q 175 expece zscore Q Q Q ..~ Q e1 0 '- IZ' I3 .. 13' IL" -1.75 -1.75 11.2 . :1 7-1 > -1.75 11.2 12.8 11.2 12.8 -1.75 1.75 11.2 12.8 observation observation observation observation Are the data normally distributed? NO Peanut jar data V Yes . . . . . . :1 (b) Determine the sample standard deviation. 11 95 11 69 12 18 11 35 11 83 11 83 11.53 12.17 11.74 11.47 12.32 12.62 s = (Round to three decimal places as needed.) -m