Write an equation of the line that is parallel to y=1/2x+3 and passes through the point (10,-5)
2 answers:
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Answer:
The sample mean is 13.
The sample variance is 0.2286.
The sample standard deviation is 0.4781.
Step-by-step explanation:
The sample is:
S = {12.6, 12.9, 13.4, 12.3, 13.6, 13.5, 12.6, 13.1}
The sample is of size <em>n</em> = 8.
The formula to compute the sample mean, sample variance and sample standard deviation are:
Compute the sample mean as follows:
The sample mean is 13.
Compute the sample variance as follows:
The sample variance is 0.2286.
Compute the sample standard deviation as follows:
The sample standard deviation is 0.4781.
Given expression: for x = 3 and y = –2
(6) Mistake did by Grayson:
In second step, first to do 3² and then multiply with 4.
But Grayson first multiply 4 with 3 and then squared the expression.
This is wrong.
(7) Mistake did by Emily:
In third step, first to multiply 2 with (–2) using BODMAS rule and then add with 36.
But Emily first added 36 with 2 which gives 38.
This is wrong.
(8) Mistake did by Pat:
In first step, the y value given is –2.
But Pat substituted y value is 2.
This is wrong.
(9) Correct evaluation:
This is the correct way to evaluate the given expression.