monfils 418_test 2 review-2

Ci x zx ci 92 258 17 ci 92 4386 thus

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Unformatted text preview: the popula$on) is 1.7, with a degree of confidence of 99%, what is the interval within which the popula$on mean will be? CI = X ± z(σx) If the mean of your sample is 92, and the standard error of the mean (of the popula$on) is 1.7, with a degree of confidence of 99%, what is the interval within which the popula$on mean will be? CI = X ± z(σx) CI = 92 ± 2.58 (1.7) CI = 92 ± 4.386 Thus, we can conclude with 99% confidence, that the popula$on mean will be between 87.614 and 96.386 A research study was conducted to examine the differences between older and younger adults on perceived life sa$sfac$on. A pilot study was conducted to examine this hypothesis. Ten older adults (over the age of 70) and ten younger adults (between 20 and 30) were give a life sa$sfac$on test (known to have high reliability and validity). Scores on the mea...
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