Mathematics, 16.08.2019 08:10, keiolanibrooks
To construct an interval estimate for the difference between the means of two populations when the standard deviations of the two populations are unknown and it can be assumed the two populations have equal variances, we must use a t distribution with (let n1 be the size of sample 1 and n2 the size of sample 2)
a. (n1 + n2) degrees of freedom
b. (n1 + n2 - 1) degrees of freedom
c. (n1 + n2 - 2) degrees of freedom
d. n1 - n2 + 2
Answers: 3
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Lassify the function as linear or quadratic and identify the quadratic, linear, and constant terms. f(x) = (3x + 2)(β6x β 3) linear function; linear term: β21x; constant term: β6 linear function; linear term: β18x2; constant term: β6 quadratic function; quadratic term: 6x2; linear term: 24x; constant term: β6 quadratic function; quadratic term: β18x2; linear term: β21x; constant term: β6
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To construct an interval estimate for the difference between the means of two populations when the s...
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