Results of random samples selected from two independent normally distributed populations: nx = 40, x = 380, a, = 36, ny = 50, ỹ = 360, and a, = 25 The difference between the two population averages (µx – Hy ) What is the 90% confidence interval? A. 5.92 < (ux – Hy ) < 30.45 B. 6.77 < (µx – Hy ) < 31.02 C. 7.86 < (µx – Hly ) < 28.50 D.8.98 < (µx – My ) < 31.02

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Results of random samples selected from two independent normally distributed populations:
nx = 40, x = 380, a, = 36,
ny = 50, ỹ = 360, and a, = 25
The difference between the two population averages (ux – Hy) What is the 90% confidence interval?
A. 5.92 < (ux – µy ) < 30.45
B. 6.77 < (µx – Hy ) < 31.02
C. 7.86 < (µx – Hy ) < 28.50
D.8.98 < (ux - Hy ) < 31.02
Transcribed Image Text:Results of random samples selected from two independent normally distributed populations: nx = 40, x = 380, a, = 36, ny = 50, ỹ = 360, and a, = 25 The difference between the two population averages (ux – Hy) What is the 90% confidence interval? A. 5.92 < (ux – µy ) < 30.45 B. 6.77 < (µx – Hy ) < 31.02 C. 7.86 < (µx – Hy ) < 28.50 D.8.98 < (ux - Hy ) < 31.02
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