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Statistics Ch 5 Quiz 3 of 7

# Statistics Ch 5 Quiz 3 of 7 - Now we want the right hand...

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Unformatted text preview: Now we want the right hand portion of the curve. So we look up the critical value 2.1, and subtract that from 1 since the total area under the curve is 1. We ﬁnd the value 0.9821, and its complement, the one we are after is 0.0179, or about 2%. Page 274 8. The population of all ﬁve US Presidents who were professional military an ages at inauguraton: Ike (62), Grant (46), Harrison (68), Taylor (64), Washington (57). Assume samples of size 2 are selected with replacement from the populatior: of ages. Prez 1 Prez 2 Age 1 Age 2 Average age 1 1 62 62 62 1 2 62 46 54 1 3 62 68 65 1 4 62 64 63 1 5 62 57 59.5 2 1 46 62 54 2 2 46 46 46 2 3 46 68 57 2 4 46 64 55 2 5 46 57 51 .5 3 1 68 62 65 3 2 68 46 57 3 3 68 68 68 3 4 68 64 66 3 5 68 57 62 . 5 4 1 64 62 63 4 2 64 46 55 4 3 64 68 66 4 4 64 64 64 4 5 64 57 60. 5 5 1 57 62 59. 5 5 2 57 46 51.5 5 3 57 68 62. 5 5 4 57 64 60. 5 5 5 57 57 57 Notes Prez n is the nth mentioned president. Average of the averages 59.4 Population mean: 59.4 Note they are here equal. The central limit theorem states they will tend that way, but does not guarantee that they will be equal. ...
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