We have drawn two independent random samples from two different populations with the following sample statistics; n1 = 20, X1 = 22.5, s1 = 2.5 and n2 = 30, X2 = 20.1, s2 = 4.8. %3D (a) Compute the degrees of freedom for the t distribution. (b) Within 95% confidence, determine the margin of error. (c) Consider the hypothesis test Ho: µ1- 42 = 0 and Ha: H1- 42 6= 0. Compute the p-value and state your conclusion for 95% confidence level.

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We have drawn two independent random samples from two different populations with the following
sample statistics; n1 = 20, X1 = 22.5, s1 = 2.5 and n2 = 30, X2 = 20.1, s2 = 4.8.
(a) Compute the degrees of freedom for the t distribution.
(b) Within 95% confidence, determine the margin of error.
(c) Consider the hypothesis test Họ: µ1- 42 = 0 and H.: H1- H2 6= 0. Compute the p-value and state your
conclusion for 95% confidence level.
Transcribed Image Text:We have drawn two independent random samples from two different populations with the following sample statistics; n1 = 20, X1 = 22.5, s1 = 2.5 and n2 = 30, X2 = 20.1, s2 = 4.8. (a) Compute the degrees of freedom for the t distribution. (b) Within 95% confidence, determine the margin of error. (c) Consider the hypothesis test Họ: µ1- 42 = 0 and H.: H1- H2 6= 0. Compute the p-value and state your conclusion for 95% confidence level.
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