Reference no: EM132514874
Are the underlined answers correct?
The personnel department of a large corporation wants to estimate the family dental expenses of its employees to determine the feasibility of providing a dental insurance plan. A random sample of 12 employees reveals the following family dental expenses (in dollars).
See Attached Excel for Data.
Construct a 97% confidence interval estimate for the average family dental expenses for all employees of this corporation.
Place your LOWER limit, in dollars rounded to 2 decimal places, in the first blank. Do not use a dollar sign, a comma, or any other stray mark. For example, 123.45 would be a legitimate entry. .052
Place your UPPER limit, in dollars rounded to 2 decimal places, in the second blank. Do not use a dollar sign, a comma, or any other stray mark. For example, 567.89 would be a legitimate entry. .122
Detail expense data: 115,370,250,593,540,225,177,425,318,182,275,228
Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker.
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.