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Ludmilka [50]
2 years ago
8

A satellite travels 14 miles in 20 minutes. What is the satellite’s miles per hour?

Mathematics
2 answers:
kirill115 [55]2 years ago
4 0
42 is the answer

60 divided by 20 equals 3
3 times 14
42

AlexFokin [52]2 years ago
3 0
The answer is 294 mph
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Step-by-step explanation:

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Complete question :

The average daily volume of a computer stock in 2011 was p = 35.1 million shares, according to a reliable source. A stock analyst believes that the stock volume in 2014 is different from the 2011 level. Based on a random sample of 40 trading days in 2014, he finds the sample mean to be 30.9 million shares, with a standard deviation of s = 11.8 million shares. Test the hypotheses by constructing a 95% confidence interval. Complete parts (a) through (c) below. State the hypotheses for the test. Construct a 95% confidence interval about the sample mean of stocks traded in 2014.

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H0 : μ = 35.1 ;

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Step-by-step explanation:

The hypothesis :

H0 : μ = 35.1

H1 : μ < 35.1

The confidence interval :

Xbar ± Margin of error

Xbar = 30.9

Margin of Error = Zcritical * s/sqrt(n)

Zcritical at 95% = 1.96

Margin of Error = 1.96 * (11.8/sqrt(40))

Margin of Error = 4.412

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Upper boundary :

30.9 + 4.412 = 35.312

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