A survey of 23 customers at a shopping centre asked the distance(km) travelled to reach the shopping centre. The data was entered into Minitab to determine the descriptive statistics.a survey of 23 customers at a shopping centre asked the distance(km) travelled to reach the shopping centre. The data was entered into Minitab to determine the descriptive statistics.
Variable Distance N=23, Mean=8.221, Median=8.130, StDev=1.467, Variable Distance Minimum=5.405, maximum=11.171, Q1=7.402, Q3=9.293
Calculate the 90% confidence interval for the true mean and provide a concluding statement.
State 2 assumptions necessary to do the above calculation.
1 answer