Answer:
Part (a) The point estimate of the proportion of adults aged 18 to 29 who use the Internet is 0.9498.
Part (b) The point estimate of the proportion of adults aged 30 to 49 who use the Internet is 0.8896.
Part (b) Estimate of the proportion of population who use the Internet is 0.7624.
Step-by-step explanation:
Consider the provided information.
Part (a) point estimate of the proportion of adults aged 18 – 29 who use the Internet
The results showed that 454 out of 478 adults aged 18-29 answered yes;
The point estimate of the proportion of adults aged 18 to 29 who use the Internet is 0.9498.
Part (b) Develop a point estimate of the proportion of adults aged 30-49
741 out of 833 adults aged 30-49 answered yes;
The point estimate of the proportion of adults aged 30 to 49 who use the Internet is 0.8896.
Part (c) Suppose your target population of interest is that of all adults (18 years of age and over). Develop an estimate of the proportion of that population who use the Internet.
Estimate of the proportion of population who use the Internet is 0.7624.
A. yes, the data represents a function because u have no repeating x values. A function cannot have repeating x values...they can have repeating y values, just not the x ones.
B. table : (8,8)(12,12)(14,16)(16,16)
look at ur points...when x = 8, y = 8...so the table, when x = 8 has a
value of 8
relation : f(x) = 8x - 5....when x = 8
f(8) = 8(8) - 5
f(8) = 64 - 5
f(8) = 59....and the relation has a value of 59
Therefore, the relation has a greater value when x = 8 <==
C. f(x) = 8x - 5...when f(x) = 19
19 = 8x - 5
19 + 5 = 8x
24 = 8x
24/8 = x
3 = x <==
Answer:
D) 3
Step-by-step explanation:
22 * 2 = 44
To have a remainder 3, the number should be 44 + 3 = 47
47 ÷ 22 , leaves a remainder 3.
47 +22 = 69
69 ÷ 3 leaves a remainder 3.
69 +22 = 91
91 ÷ 3 leaves a remainder 3.
Answer: 47 , 69 , 91
Let x = length and y = width
You would have 2 lengths, so 2x and 3 widths, so 3y
Those need to equal total length of fence:
2x + 3y = 1200
The 3 widths would equal total fence minus the 2 lengths:
3Y = 1200-2x
Solve for y: y = 400 -2/3x
Area = length x width = xy. Replace y :
Area = x(400-2/3x) = 400x-2/3x^2
Differentiate:
400-4x/3 =0
4x/3 = 400
4x = 1200
X = 300
Y = 400-2/3(300) = 200
The dimension would be 300 ft x 200 ft
Answer:
3x^ - 4x - 76
Step-by-step explanation:
