Question

The accompanying data table includes weights (in grams) of a simple random sample of 40 quarters made before 1964 and weights of 40 quarters made afer 1964. When designing ooin vending machines, the standard deviations of pre-1964 quarters and post-1964 quarters must be oonsidered. Use the Levene-Brown-Forsythe test and a 0.05 significance level to test the caim that the weights of pre-1964 quaters and the weights of post-1964 quarters are from populatione with the same standand deviation mClck the loon to view the data table of pre- and post-1964 quarter weights (grama). Let the weights of pre-1964 quarters represent population 1. Let the weights of post-1964 quarters represent population 2 What are the nuil and atemative hypotheses? OA He Data Table H a oc Hel H Complete data table Weight of Post-1964 Quarters (grama) Weight of Pre-1364 Quarters (grams) 62759 62618 6275 6.1978 55614 5.5816 56981 62432 5.7457 5.7067 5521 6.1533 Identily the test statistic 56848 62465 63172 s6274 56157 5.9941 6.1281 t (Round to three decimal places as needed) 57217 62151 62866 6.1487 56114 5660 50068 57198 6.0829 .060 T790 65404 56646 6.3415 62441 5.6845 8.3009 6.1309 62412 56234 5.5008 5.6406 56485 56703 60775 61095 6.1442 6.1073 6.1181 61787 56061 56848 5.5600 553 5 5491 57239 62130 6.1352 61947 5.7344 6.1940 66449 5.5804 56061 6.2821 6 2847 56555 56083 5556 6.0257 6.2908 61673 6.1777 56063 63266 Done Print Enter your answer in the answer box and then click Check Answer parts remaining

Answer 1

Answer:

Weight of pre - 1964:

6.2759,6.2432,6.1533,6.9941,6.1281,6.2151,6.2806,6.0760,6.1426,6.3415,6.1309,6.2412,6.1442,6.1073,6.1181,6.1352,6.2821,6.2647,6.2908,6.1673,6.2618,6.2756,6.1978,6.2465,6.3172,6.1487,6.0829,6.1423,6.1970,6.2441,6.3669,6.0775,6.1095,6.1787,6.2130,6.1947,6.1903,6.2057,6.1777,6.2364

n1 = 40

Mean = 6.2199

Standard Deviation = s1 =0.1455

Weight of post - 1964:

5.6081,5.7457,5.7057,5.5921,5.7217,5.6114,5.6160,5.5999,5.779,5.6841,5.6234,5.5928,5.6486,5.6861,5.5361,5.5491,5.7239,5.6555,5.6063,5.5756,5.5614,5.5816,5.6848,5.6274,5.6157,5.6668,5.7198,5.6694,5.5454,5.6846,5.5636,5.6485,5.6703,5.6848,5.5609,5.7344,5.6449,5.5804,5.6061,5.6063

n2 = 40

Mean = 5.6379

S2 = 0.0614

Spooled = da Git son) - 160-145957 (0.0619)] = 0. 1117 i ņi - tv Test-Static (t) = ? Spooled Smith 6.2199- 5:6379 0.1117 / tot to 0.582 .23.302 0.02498 :. : 23.302