Aresearcher is interested in estimating the mean weight of a semi tracker truck to determine the potential load capacity. she takes a random sample of 17 trucks and computes a sample mean of 20,000 pounds with sample standard deviation of 1,500. the 95% confidence interval for the population mean weight of a semi tracker truck

(19229.11 ,20770.89)

Step-by-step explanation:

We are given the following information:

Sample size, n = 17

Sample mean = 20,000 pounds

Sample standard deviation = 1,500 pounds

Confidence level = 95%

Significance level = 5% = 0.05

95% Confidence interval:  

Putting the values, we get,  

da freeck kinda math is this just drop out

step-by-step explanation: