Solve the below:
Q: A confidence interval is desired for the true average stray-load loss (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm.
Assume that stray-load loss normally distributed with sigma = 2.3
Give answer to three decimal places.
Compute a 95% confidence interval for when n = 25 and xbar = 55.4
What is the lower bound?
Give answer to three decimal places
Compute a 95% confidence interval for when n = 25 and xbar = 55.4
What is the upper bound?
Give answer to three decimal places.
Compute a 95% confidence interval for when n = 100 and xbar = 55.4
What is the lower bound?
Give answer to three decimal places
Compute a 95% confidence interval for when n = 100 and xbar = 55.4
What is the upper bound?
Give answer to three decimal places.
Compute a 99% confidence interval for when n = 100 and xbar = 55.4
What is the lower bound?
Give answer to three decimal places.
Compute a 99% confidence interval for when n = 100 and xbar = 55.4
What is the upper bound?
How large must n be if the width of the 99% interval is to be 1.5?