Question 2 - (5 points) - Confidence Interval at 95%

A group of 25 people who were diagnosed with prediabetes was prescribed Metformin to lower their blood glucose levels. Their blood glucose levels were tested 4 times over 2 weeks and the average glucose levels were documented. Use this sample data to construct a 95% confidence interval for the mean blood glucose level of the 25 patients.

99, 107, 97, 110, 115, 112, 108, 104, 102, 106, 97, 91, 113,

115, 105, 103, 100, 101, 98, 93, 106, 117, 114, 102, 101

Calculate the sample mean. =

Calculate the standard deviation. =

The sample size and df (degrees of freedom). df=

Determine the confidence level.

Indicate the criteria = t with =

Cumulative probability =

Calculate EBM, ROUND TO 4 DECIMAL PLACES =

Take the sample mean - the EBM to find the lower bounds of the confidence interval

Take the sample mean + the EBM to find the upper bounds of the confidence interval

Interpret =