Refer to the accompanying ti-83/84 plus calculator display of a 95% confidence interval. the sample display results from using a simple random sample of the amounts of tar (in milligrams) in cigarettes that are all king size, nonfiltered, nonmenthol, and non-light. express the confidence interval in the format of x overbarplus or minuse. zinterval (21.182,23.958) x overbarequals22.57 nequals25 the confidence interval is nothingplus or minus nothing.

[22.57 ± 2.776]

Step-by-step explanation:

Hello!

You have the 95% Confidence Z-interval (21.182;23.958), the mean X[bar]= 22.57 and the sample size n=25.

The formula for the Z interval is

[X[bar] ± ]

The value of Z comes from tha standard normal table:

The semiamplitude (d) or margin of error (E) of the interval is:

E or d= (Upperbond- Lowerbond)/2 = (23.958-21.182)/2 = 2.776

[X[bar] ± E]

[22.57 ± 2.776]

I hope it helps!

chase is right because he already been to the swings and he know how far it will be to get there

step-by-step explanation: