Confidence Interval Using t Distribution Calculator

Confidence Interval (for a Mean)

95 Percent Confidence Interval

SOLVED: If a confidence level of 94% is used to construct a confidenceinterval for the mean μ of a normal population when the value ofthe standard deviation σ is known, select the value of the zcritical value to be used.

Confidence Interval Using Normal Distribution Calculator

SOLVED:Load the confidence intervals for a mean (the impact of not knowing the standard deviation) applet. (a) Set the shape to normal with mean =100 and Std. Dev. =15 . Construct at least 1000 confidence intervals with n=10 . Compare the proportion of the 95 % Z-intervals and t -intervals that contain the population mean. Is this what you would expect? (b) Set the shape to skewed right with mean =100 and Std. Dev. =15 . Construct at least 1000 confidence intervals with n=10 . Compare the propor