Independent random samples were selected from 2 populations. The sample means, known population variances, and sample sizes are given in the table below. Find an 80% confidence interval for the difference in the population means. Population 1 X155 Population 2 6²1 = 4.3 n1 = 89 X2 = 46 0²2= 6.2 n2 = 97

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Calculate the point estimate. 

Independent random samples were
selected from 2 populations. The sample
means, known population variances, and
sample sizes are given in the table below.
Find an 80% confidence interval for the
difference in the population means.
Population 1
x1 = 55
Population 2
0²1= 4.3
n1 = 89
x2 = 46
0²2= 6.2
n2 = 97
Transcribed Image Text:Independent random samples were selected from 2 populations. The sample means, known population variances, and sample sizes are given in the table below. Find an 80% confidence interval for the difference in the population means. Population 1 x1 = 55 Population 2 0²1= 4.3 n1 = 89 x2 = 46 0²2= 6.2 n2 = 97
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