Answer:
See explaination and attachment
Step-by-step explanation:
Given the parameters we have, we want to Construct a 90% confidence interval for the true mean of the population.
Hence, making use of these parameters;
sample size =100
Std deviation =25
mean if the sample=253.
Therefore solving for 90% confidence interval for the true mean of the population. We will apply a formula.
Please kindly check attachment gor the step by step solution for all the questions.
