Answer:
Step-by-step explanation:
Given that in a study of computer use, 1000 randomly selected Canadian Internet users were asked how much time they spend using the Internet in a typical week (Ipsos Reid, August 9, 2005). The mean of the sample observations was 12.7 hours.
a) 
(right tailed test at 5% level)
test statistic Z = Mean diff/std error = 1.265
(Here z test is used because sigma is known)
p value = 0.103
Since p >0.05, we accept H0
b) Here s= 2 hours.
But sample size is very large so z test is used.
Std error = 
Test statistic = 3.16
p value =0.000783
since p <alpha, H0 is rejected
c) Because std deviation was less in part B, we got p value very low thus making us reject H0 in part B.
<span>PV=NRT</span>If you want to solve that for n, remember that you can multiply or divide the whole equation by any number or expression as long as you do it to both sides. For example, if we divide both sides by R we get
<span><span><span>PVR</span></span>=NRT</span>or<span><span><span>PVR</span></span>=NT</span>after canceling R from both numerator and denominator on the right. Continue the process to solve for N.
Answer:
1. 16
2. 1
3. 1
4. 4
5. 2
6. 8
7. 1
8. 9
9. 90
10. 10
Step-by-step explanation:
The equivalent expression is ~
Answer:
C. Amount needed to fence around a circular garden
Step-by-step explanation:
The Circumference of a circle can be referred to as the length of the circle. It also called the perimeter of a circle.
The circumference of a circle can be defined as the distance roundabout a circle.
The circumference of a circle is calculated mathematically as:
a) 2πr or
b) πD
Where r = radius of the circle.
D = Diameter of the circle
From the above question, the situation can be modeled by circumference of a circle based on the definition that the circumference of a circle is the distance around a circle is Option C. "Amount needed to fence around a circular garden"
