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3 years ago

Are the fractions 5/9 and 10/20 proper or improper fractions?

2 answers:

6 0

Proper.
Proper fractions are when the numerator (top number) is smaller then the denominator (bottom number), improper fractions being the opposite- think of 5/3, 8/5, etc.
In the fractions 5/9 and 10/20 both numerators are smaller then the denominator, making them proper fractions.
If there’s an option to simplify the numbers on the question; 5/9 would stay the same and 10/20 would turn into 1/2. Hope this helps!

azamat3 years ago

4 0

Answer:

Proper, but not simplified

Step-by-step explanation:

Improper fractions have a greater number on the numerator ex:

13/23 45/18

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Answer:

There is no convincing evidence at α = 0.10 level that the average vertical jump of students at this school differs from 15 inches.

Step-by-step explanation:

We have to make a hypothesis test to prove the claim that the average vertical jump of students differs from 15 inches.

The null and alternative hypothesis are:

$H_0: \mu=15\\\\H_a: \mu\neq15$

The significance level is 0.10.

The sample mean is 17 and the sample standard deviation is 5.37.

The degrees of freedom are df=(20-1)=19.

The t-statistic is:

$t_{19}=\frac{M-\mu}{s_M/\sqrt{n}} =\frac{17-15}{5.37/\sqrt{20}}=\frac{2}{5.37/4.47} =2/1.20=1.67$

The two-sided P-value for t=1.67 is P=0.11132.

This P-value is bigger than the significance level, so the effect is not significant. The null hypothesis can not be rejected.

There is no convincing evidence at α = 0.10 level that the average vertical jump of students at this school differs from 15 inches.

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3 years ago

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Answer:

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Step-by-step explanation:

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Answer:

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Answer:

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