Abank offers auto loans to qualified customers. the amount of the loans are normally distributed and have a known population standard deviation of 4 thousand dollars and an unknown population mean. a random sample of 22 loans is taken and gives a sample mean of 42 thousand dollars. find the margin of error for the confidence interval for the population mean with a 90% confidence level.

1.467

Step-by-step explanation:

Formula of Margin of Error for (n<30):-

Given : Sample size : n= 22

Level of confidence = 0.90

Significance level :

By using the t-distribution table ,

Critical value :

Standard deviation:

Then, we have

Hence, the margin of error for the confidence interval for the population mean with a 90% confidence level =1.467

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step-by-step explanation:

answer is 12345678900987654321234567890987654321

step-by-step explanation: