Which of the following is not a property of the sample standard deviation s? a. sensitive to changes in the distribution b. calculated based on the mean c. larger than the population standard deviation o d. resistant to extreme data values e. all of the above.

E. All of the above

Step-by-step explanation:

The standard deviation has to with the process of measuring spread in statistics so as to calculate or measure the central tendency. Through this, we are able to measure the mean within the spread.

We also use standard deviation in comparison with the spread between two sets of separate data that comes with almost the same reasoning.

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.