2 years ago

60 feet per second to kilometer per hour

Mathematics

2 answers:

Pani-rosa [81]2 years ago

7 0

Answer:

65.8km/h (to one decimial place).

Julli [10]2 years ago

7 0

Answer:

65.8368

Step-by-step explanation:

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Answer:

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$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

And replacing we got:

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Step-by-step explanation:

Information given

$\bar X=23.6$ represent the sample mean

$s=8.6$ represent the sample standard deviation

$n=28$ sample size

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System of hypothesis

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Alternative hypothesis: $\mu < 25$

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And replacing we got:

$t=\frac{23.2-25}{\frac{8.6}{\sqrt{28}}}=-1.11$

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Step-by-step explanation:

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