The National Health and Nutrition Examination Survey contains data on 2,263 U.S. adults. One of the variables is Total Cholesterol. Total cholesterol levels less than 200 milligrams per deciliter (mg/dL) are considered desirable for adults. A reading between 200 and 239 mg/dL is considered borderline high and a reading of 240 mg/dL and above is considered high. Does the data in this sample indicate that these individuals have average total cholesterol levels that are desirable?

One sample T confidence interval:

: Mean of variable

90% confidence interval results:

Variable	Sample Mean	Std. Err.	DF	L. Limit	U. Limit
Total Cholesterol	188.85646	0.82227079	2514	187.50345	190.20947

1) Write the interval and its interpretation.

2) Does your confidence interval provide evidence that the average cholesterol level is desirable? Explain