The surface area of three dimonsensed face is the sum of all the the surface areas of each of the face given below are the nets
of some solid derive the formula for calculating its curved surface area and total surface area
Please answer the question it's very urgent
Please answer the question it's very urgent
1 answer:
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Simple....
using the formula
to find slope....
1.) (9,2)(4,3)
(No)
2.) (9,2)(3,4)
(No)
3.) (2,9)(3,4)
(No)
4.) (2,9)(4,3)
(YES!)
Thus, your answer.
using the formula
1.) (9,2)(4,3)
2.) (9,2)(3,4)
3.) (2,9)(3,4)
4.) (2,9)(4,3)
Thus, your answer.
Answer:
99% confidence interval for the population mean is [19.891 , 24.909].
Step-by-step explanation:
We are given that a group of 19 randomly selected students has a mean age of 22.4 years with a standard deviation of 3.8 years.
Assuming the population has a normal distribution.
Firstly, the pivotal quantity for 99% confidence interval for the population mean is given by;
P.Q. = ~
where, = sample mean age of selected students = 22.4 years
s = sample standard deviation = 3.8 years
n = sample of students = 19
= population mean
<em>Here for constructing 99% confidence interval we have used t statistics because we don't know about population standard deviation.</em>
So, 99% confidence interval for the population mean, is ;
P(-2.878 < < 2.878) = 0.99 {As the critical value of t at 18 degree of
freedom are -2.878 & 2.878 with P = 0.5%}
P(-2.878 < < 2.878) = 0.99
P( <
<
) = 0.99
P( <
<
) = 0.99
<u>99% confidence interval for</u> = [
,
]
= [ ,
]
= [19.891 , 24.909]
Therefore, 99% confidence interval for the population mean is [19.891 , 24.909].