Sample size n = 4
Degrees of freedom = n-1= 3
The critical value of t for 3 df with 95% Confidence is +/-3.182
The 95% Confidence Interval for is
The 95% Confidence Interval for is ( 45.11, 84.89)
b) The Margin of Error is
c) Interpretation : Option B) If a large sample of microwave are takken approximately 95% of them will have repair costs between the bounds of the confidence interval.
in a random sample of four microwave ovens, the mean repair cost was 65.00 and the...
In a random sample of six microwave ovens, the mean repair cost was $65.00 and the standard deviation was $12.50. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence interval for the population mean mu. What is the margin of error of mu? Interpret the results. The 90% confidence interval for the population mean mu is ( nothing, nothing). (Round to two decimal places as needed.) The margin of error is nothing. (Round to...
6.2.19-T Question Help In a random sample of four microwave ovens, the mean repair cost was $85.00 and the standard deviation was $13.00. Assume the population is normally distributed and use a t-distribution to construct a 99% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results. The 99% confidence interval for the population mean μ is (DD (Round to two decimal places as needed.) 6.2.21-T Question Help In a random sample...
In a random sample of fivefive microwave ovens, the mean repair cost was $75.0075.00 and the standard deviation was $14.0014.00. Assume the population is normally distributed and use a t-distribution to construct a 9090% confidence interval for the population mean muμ. What is the margin of error of muμ? Interpret the results.
Question Help In a random sample of live microwave ovens, the mean repair cost was $60.00 and the standard deviation was $12.00. Assume the population is normally distributed and use at distribution to construct a 90% confidence interval for the population mean . What is the margin of error of ? Interpret the results The 90% confidence interval for the population mean (Round to two decimal places as needed.) is C D Enter your answer in the edit fields and...
In a random sample of six microwave? ovens, the mean repair cost was ?$90.00 and the standard deviation was ?$13.00 Assume the variable is normally distributed and use a? t-distribution to construct a 90?% confidence interval for the population mean ?. What is the margin of error of ???
In a random sample of six mobile devices, the mean repair cost was $80.00 and the standard deviation was $12.00. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 95% confidence interval for the population mean. Interpret the results. The 95% confidence interval for the population mean mu is
In a random sample of four mobile devices, the mean repair cost was $60.00 and the standard deviation was $14.00. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 90% confidence interval for the population mean. Interpret the results. The 90% confidence interval for the population mean is (DO (Round to two decimal places as needed.) The margin of error is $ (Round to two decimal places as needed.) Interpret...
6.2.20-T Question Help In a random sample of four mobile devices, the mean repair cost was $90.00 and the standard deviation was $13.00. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 90% confidence interval for the population mean. Interpret the results.
In a random sample of six mobile devices, the mean repair cost was $70.00 and the standard deviation was $11.00. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 95% confidence interval forte population mean. Interpret the results. The 95% confidence interval for the population m ean μ is (DO). Round to two decimal places as needed.) The margin of error is s (Round to two decimal places as needed.)...
Libel In a random sample of four mobile devices, the mean repair cost was $60.00 and the standard deviation was $13.50. Assume the population is normally distrbuted and use at distribution to find the margin of error and construct a 90% confidence interval for the population mean. Interpret the results ol The 90% confidence interval for the population mean pis (C. (Round to two decimal places as needed.) The margin of error iss (Round to two decimal places as needed)...