According to the empirical (68-95-99.7) rule, if a random variable z has a standard normal distribution, then approximately 95% of all values fall between z-scores of -2 and 2. Use the standard normal table or software to determine the precise positive value of z such that 95% of the area under the standard normal density curve is between –z and z. If you use software, you may find this list of manuals useful. Give the positive value of z precise to two decimal places. z =​

line or a linear equation graph

step-by-step explanation:

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.

sometimes it can be so they can fit in with a certain group, and others are just like that because of their personality.