Question

A jar of peanuts is supposed to have 16 ounces of peanuts. The filling machine inevitably experiences fluctuations in filling, 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. O A OB c. Aspeed 2-0 Aapedec 2-0 OD a expected 2-sccre 16.6- 175 1.75- 1.75 . . . . A 3 .... ... 1.75 -1.75 ahservation 16.6 18 i -1.750 154 ahovation 15.4 caserwator -1.75 14 154 observation 16.6 Are the data normally distributed? Peanut jar data Yes X No (b) Determine the sample standard deviation, O 15.95 15.54 15.69 16.16 16.25 15.78 15.48 15.51 15.87 16.33 15.82 16.43 s= (Round to three decimal places as needed.) Print Done

Answer 1

Ano: Mean (*)= 15.95+--+ 16.43 191.01 12 12 15.92 Sample standard deviation (s) {(x-x) 2 n-) (15.95-15.92) + (16.43 15.92) 2 12-1 11 0.10315 0.321