Asurvey of 25 grocery stores revealed that the mean price of a gallon of milk was $2.98, with a standard error of $0.10. if 90% and 95% confidence intervals were developed to estimate the true cost of a gallon of milk, what similarities would they have?

Both have mid value of interval as mean =2.98

Step-by-step explanation:

Given that a survey of 25 grocery stores revealed that the mean price of a gallon of milk was $2.98, with a standard error of $0.10.

We have Margin of error = * Std error

The critical values for z are as per table below:

Confidence level       Z critical             Margin of error

         90%                    1.645                

          95%                   1.96                    

Mean of milk galon = 2.98

Confidence interval = ±Margin of error

CI 90% =

CI 95% =

Similarities are both have mid value the same as 2.98

the answer is c just got it on ed

step-by-step explanation:

step-by-step explanation:

the answer is 128