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Marianna [84]
3 years ago
6

Which of the following rules represents a dilation? A. (x, y) → (x − 3, y + 5) A. , (x, y) → (x − 3, y + 5) , B. (x, y) → (−y, x

) B. , (x, y) → (−y, x) , C. (x, y) → (0.5x, 0.5y) C. , (x, y) → (0.5x, 0.5y) , D. (x, y) → (−x, y) D. , (x, y) → (−x, y) ,
Mathematics
1 answer:
murzikaleks [220]3 years ago
7 0

Answer:

35

Step-by-step explanation:

mutilply the 3 by the 9 subtract dez uts

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Answer:

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Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $1,503

Sample mean, \bar{x} = $1,425

Sample size, n = 25

Sample standard deviation, s = $160

We have to carry a hypothesis test that the mean annual premium in Pennsylvania is lower than the national mean annual premium.

a) First, we design the null and the alternate hypothesis

H_{0}: \mu \geq 1503\text{ dollars}\\H_A: \mu < 1503\text{ dollars}

b) Point estimate  of the difference between the mean annual premium in Pennsylvania and the national mean

Point estimate of difference =

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\text{Point estimate} = \bar{x} - \mu = 1425 - 1503 = -78

Thus,

Point estimate of difference = -78

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