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busn230-00d statistics fall 2019 instructor sandra boyer
blanca salazar
1 12/1/19 10: 46 pm
homework: m13: ch. 10 homework
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4 of 4 (3 complete)
score: 0 of 3 pts
x 10.1.4-t
hw score: 60%, 6 of 10 pts
pe question
assume that you have a sample of n with the sample mean x, 41, and a sample standard deviation of s, -4, and you have an independent sample of my from another population with a sample mean of
x2 - 36, and the sample standard deviation s2 8. construct a 99% confidence interval estimate of the population mean difference between and 12. assume that the two population variances are equal
shi-h2u
(round to two decimal places as needed.)
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nowing

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1

c - they will have the same distribution

step-by-step explanation:

this is the only one that could make sense. : )

your question is incomplete, write all the numbers in the sequence that it tells you.  

step-by-step explanation:

1 1/7 hope i

step-by-step explanation:

8/7 = (1 * 7 + 1) / 7 = 1 + 1/7 = 1 1/7