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4 years ago

Please help me with this question

Mathematics

1 answer:

vlabodo [156]4 years ago

4 0

Answer:

Step-by-step explanation:

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inn [45]

Answer:

I will give you clue it’s 400 or 628

Step-by-step explanation:

7 0

3 years ago

Can someone help me with this math homework please!

Grace [21]

Answer:

Step-by-step explanation:

7h-15h+40=-72

-8h=-32

h=4

7 0

4 years ago

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

choli [55]

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.

3 0

3 years ago

Find the area in both questions if possible <br><br> High school geometry

ELEN [110]

Answer:

Step-by-step explanation:

a 141.61

b 8.64

Im bored

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3 years ago

What is the result of addin<br> 2x + 3y = -5<br> 5x - y = - 12

Vesna [10]

Answer:-41/17,-1/17

Step-by-step explanation:

did it on photo math

6 0

4 years ago