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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
For calculating a 95% confidence interval for μ1 - μ2 the difference between the means of two normally distributed populations,the summary statistics from two independent samples are:
nx = 60,
= 180,
= 360,ny = 45,
= 160,and
= 900.
It is assumed that the Population variances are unknown and are equal.
-What is the lower confidence limit of the 95% confidence interval?
¥ Per A$
The exchange rate showing how much Japanese yen (¥) one Australian dollar (A$) can buy.
Exchange Rate
An exchange rate determines how much one currency is worth in terms of another, playing a critical role in international trade and investment.
¥1.00
The monetary value of one Japanese yen, the official currency of Japan.
A$
The symbol for the Australian Dollar, the official currency of Australia.
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