Question

Two statisticians estimated the mean of a normal population represented by the following sample: 1.92, 6.42, 4.13, 4.82, 0.8, 6.39, 2.37, 4.24, 2.85, 1.81, 2.42. The population standard deviation was known and was equal to 3. 1. The first statistician constructed a 95% confidence interval. Write down the interval he obtained (write as two numbers separated by a comma) (1 point) 1.69712, 5.24288 Correct 2. The second statistician reported the confidence interval [1.936, 5.004]. What confidence level did he use? (1 point)

Answer 1

一一. Î.127. 642 '-4. 13-4-8复, @g ㅡ Populaoy 34又 nfesa 3.47士1.17 1L4구(ソ 5-24288)