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gizmo_the_mogwai [7]

4 years ago

13

Express 19.79 as a mixed number.

2 answers:

sergey [27]4 years ago

6 0

Write the decimal number as a fraction
(over 1)
19.79 = 19.79 / 1

Multiplying by 1 to eliminate 2 decimal places
we multiply top and bottom by 2 10's

Numerator = 19.79 × 10 × 10 = 1979

Denominator = 1 × 10 × 10 = 100

Numerator / Denominator = 1979 / 100

Simplifying our fraction

= 1979/100

= 1979/100

= 19 79/100

Viefleur [7K]4 years ago

3 0

19.79 as a mixed number would be:
$19 \frac{79}{100}$
Hope this helps!

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Given

Random sample of 50 commuter times

Solving (a): The null and alternate hypothesis

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$\mu =45$ and $\sigma= 9.1$

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$H_0:\mu = 45$

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Solving (b) and (c): The test statistic (T).

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<em>So, the null hypothesis is not rejected</em>

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