The trade volume of a stock is the number of shares traded on a given day. The data in the first accompanying table, in millions (so that 6.36 represents 6,360,000 shares traded), represent the volume of a certain stock traded for a random sample of 40 trading days in a certain year. A second random sample of 40 days in the
same year resulted in the data in second accompanying table. Complete parts (a) through (d) below.
Click here to view the data for the first sample.
Click here to view the data for the second sample.
(a) Use the data from the first sample to compute a point estimate for the population mean number of shares traded per day in the year.
A point estimate for the population mean number of shares traded per day in the year is million.
(Round to three decimal places as needed)
First Sample Volumes (millions of shares traded)
- X
0
3.84
6.52
6.36
3.24
3.16
5.66
3.74
4.20
8.82
3.94
3.58
3.78
6.22
4.60
3.34
3.00
4.06
5.96
2.90
5.54
9.34
5.34
2.94
2.94
5.76
2.36
4.00
3.46
4.62
3.32
6.12
4.04
3.28
2.92
4.62
6.04
3.56
1.68
5.68
3.62
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infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn

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.