Twenty prototype units were placed on accelerated test with the following failure times in (normal) hours observed: XXXXXXXXXX 664 XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX 6860. Failure times are thought to...

Twenty prototype units were placed on accelerated test with the following failure times in (normal) hours observed: 332 381 418 479 628 664 666 798 841 967 1283 1301 1971 2114 2396 2515 2589 2782 2886 6860. Failure times are thought to follow a gamma distribution. Find the MLE and MOM estimates for the parameters.