Two independent samples have been selected, 70 observations from population 1 and 74 observations from population 2. The sample means have been calculated to be ¤1 = 14.2 and x2 = 14.7. From previous experience with these populations, it known that the variances are o = 22 and o, = 40. (a) Find o (71-T2)" answer: (b) Determine the rejection region for the test of Ho : (µ – 42) = 2.29 and Ha : (µ1 – µ2) > 2.29 Use a = 0.03. %3D z > (c) Compute the standardized test statistic. The final conclustion is

MATLAB: An Introduction with Applications
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Two independent samples have been selected, 70 observations from population 1 and 74 observations from population 2.
= 14.2 and x2 =
14.7. From previous experience with these populations, it is
The sample means have been calculated to be x1
known that the variances are o
22 and o,
40.
(a) Find
answer:
(b) Determine the rejection region for the test of Ho : (µ1 – µ2) = 2.29 and Ha : (µ1 – µ2) > 2.29 Use a = 0.03.
z >
(c) Compute the standardized test statistic.
z =
The final conclustion is
O A. We can reject the null hypothesis that (u1 – H2) = 2.29 and accept that (ı – µ2) > 2.29.
O B. There is not sufficient evidence to reject the null hypothesis that (u1 - µ2) = 2.29.
(d) Construct a 97 % confidence interval for (µ1 – µ2).
< (H1 – 42) <
Transcribed Image Text:Two independent samples have been selected, 70 observations from population 1 and 74 observations from population 2. = 14.2 and x2 = 14.7. From previous experience with these populations, it is The sample means have been calculated to be x1 known that the variances are o 22 and o, 40. (a) Find answer: (b) Determine the rejection region for the test of Ho : (µ1 – µ2) = 2.29 and Ha : (µ1 – µ2) > 2.29 Use a = 0.03. z > (c) Compute the standardized test statistic. z = The final conclustion is O A. We can reject the null hypothesis that (u1 – H2) = 2.29 and accept that (ı – µ2) > 2.29. O B. There is not sufficient evidence to reject the null hypothesis that (u1 - µ2) = 2.29. (d) Construct a 97 % confidence interval for (µ1 – µ2). < (H1 – 42) <
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