Answer:
Both have mid value of interval as mean =2.98
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