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Lubov Fominskaja [6]
2 years ago
6

7 t-shirts and a hat costs £67.00

Mathematics
1 answer:
frozen [14]2 years ago
7 0
£67.00 / 7= £9.57that’s how much cost the hat
£67.00-£9.57= £57.43
£57.43/7= £8.20 per T-shirt





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A survey of 32 different gas stations in Texas found the average price of gasoline to be $3.19 a gallon with a sample standard d
Leni [432]

Answer:

The value of test statistic is -4.1247

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = $3.26 a gallon

Sample mean, \bar{x} = $3.19 a gallon

Sample size, n = 32

Sample standard deviation, σ = $0.096

First, we design the null and the alternate hypothesis

H_{0}: \mu = 3.26\text{ dollars a gallon}\\H_A: \mu < 3.26\text{ dollars a gallon}

We use one-tailed t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

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t_{stat} = \displaystyle\frac{3.19 - 3.26}{\frac{0.096}{\sqrt{32}} } = -4.1247

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3 0
2 years ago
Perform the indicated operation.
ivann1987 [24]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
1/2 of the people in the clinic are men, 1/3 are elderly, how many people are not elderly or men?
Nostrana [21]

1/6 of the people are not elderly or men

<h3>How to determine the proportion?</h3>

The given parameters are:

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Evaluate

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Hence, 1/6 of the people are not elderly or men

Read more about proportion at:

brainly.com/question/1781657

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2 years ago
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Answer:

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Step-by-step explanation:

answer is helpful or not

3 0
3 years ago
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Sliva [168]

Answer:

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Step-by-step explanation:

That is quite fast!

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6 0
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