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trapecia [35]
3 years ago
8

-8x - 18 + 7 + 2x = 5 - 3x - 4 + x

Mathematics
1 answer:
satela [25.4K]3 years ago
4 0

Answer:

x = -3

Step-by-step explanation:

-8x - 18 + 7 + 2x = 5 - 3x - 4 + x

-8x + 2x + 3x - x = 18 - 7 + 5 -4

-4x = 12

x = -3

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The p-value for a one-sided t-test is 0. 10. If the test had been two-sided, what would the p-value have been?.
Dmitriy789 [7]

Considering the one-sided p-value, the p-value for a two-sided test would be of 0.20.

<h3>How to find the p-value of a test?</h3>

It depends on the test statistic z, as follows:

  • For a left-tailed test, it is the area under the normal curve to the left of z, which is the p-value of z.
  • For a right-tailed test, it is the area under the normal curve to the right of z, which is 1 subtracted by the p-value of z.
  • For a two-tailed test, it is the area under the normal curve to the left of -z combined with the area to the right of z, hence it is 2 multiplied by 1 subtracted by the p-value of z, which means that <u>the p-value for a two-tailed test is </u><u>twice </u><u>the p-value of a one-tailed test</u>.

In this problem, for the one-tailed test, the p-value is of 0.1, hence the p-value for a two-sided test would be of 0.20.

You can learn more about p-values at brainly.com/question/13873630

4 0
2 years ago
When class 11Y1 found that their favourite teacher, Mr Musson, was leaving they decided to organise a party for him. Lewis, one
11Alexandr11 [23.1K]

Answer:

Lewis spent £14.82.

Step-by-step explanation:

Total number of cartons of juice Lewis bought = 38

i. If 1 carton of juice = 45 p, then;

Lewis would spend = 38 x 45 p

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Since 100 p = £1, then;

1710 p = \frac{1710}{100}

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ii. If 4 cartons = £1.56, then;

\frac{38}{4} = 9.5

Lewis would have spent = £1.56 x 9.5

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Given that he bought the cartons of juice for the least possible amount. Thus, Lewis spent £14.82.

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3 years ago
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Answer:

-40.1

Sorry if it's wrong but Hope it Helps!~

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