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alexdok [17]
3 years ago
15

How would 2.25 be represented as a percent? A. 225% B. 22.5% C. 2.25% D. 0.0225

Mathematics
1 answer:
ivolga24 [154]3 years ago
6 0

Answer:

A

Step-by-step explanation:

move decimal two places to get percent

2.25 = 225%

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A professor thinks that the students in her statistics class this term are less creative than most students at this university.
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Answer:

It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

Step-by-step explanation:

\mu=35\\n=23\\\=x=33\\s=5\\\alpha=0.1

1. Null and alternative hypothesis

H_{0}:\mu=35\\H_{1}:\mu

2. Significance level

\alpha=0.1\\1-\alpha=0.99

Freedom degrees is given by:

v=n-1\\v=23-1=22

For a sgnificance level of 0,01 and 22 freedom degrees,  t-student distribution value is:

t_{0.01;23}=-2. 5083

3. Test statistic

t=\frac{\=x-\mu}{\frac{s}{\sqrt{n} } }

t=\frac{33-35}{\frac{5}{\sqrt{23} } }

t=-1,918

In this case, we have an one left tailed analysis, it means that null hypothesis is rejected if t

-1.918>-2.5083

Conclusion:

It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

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3 years ago
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Answer:

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Jose bought 1.5 pounds of apples for $3.60. How much would 34 of a pound of apples cost?
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First of all, you have to calculate slope of that,

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now, equation would be y-y1 = m(x-x1)

y-1 = 1/2(x-0)

y-1 = x/2

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Answer:

y=-8/5x+77/5

Step-by-step explanation:

The equation of line that passes through the points (4, 9) and (9, 1) is y=-8/5x+77/5. Hope it helps!

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