3 years ago

Why does math exist at all

Mathematics

2 answers:

Lunna [17]3 years ago

7 0

Answer:

to make life harder, sadly

Step-by-step explanation:

12345 [234]3 years ago

7 0

Answer:

to make our lives difficult :')

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Can 15/8 be simplified

Olegator [25]

No it can't

In mixed number form it's 1 7/8

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3 years ago

You earn $5 for every friendship bracelet you sell. Write and solve an equation to find the numbers of bracelets you have to sel

swat32

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4 years ago

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Show your work with x box method

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3 years ago

A university is interested in promoting graduates of its honors program by establishing that the mean GPA of these graduates exc

den301095 [7]

Step-by-step explanation:

Population Mean (u) = 3.50

Sample (n)= 36

Sample mean (x) = 3.60

Population standard deviation (s)= 0.40

Test statistics:

(Null hypothesis) H0: u= 3.5 (Population mean is equal to 3.5)

(Alternate hypothesis) H1: u> 3.5 (Population mean is greater than 3.5)

Z= $\frac{x-u}{\frac{s}{\sqrt{n} } }$ = $\frac{3.60-3.50}{\frac{0.4}{\sqrt{36} } }$ = $\frac{0.10}{0.067}$ = 1.5

critical value= Z0.05= 1.645 (From Z table)

Since, Z value is less than critical Z value that is Z<1.645

We cannot reject null hypothesis

So, we decide to reject that the mean GPA of graduates exceeds 3.50

3 0

3 years ago

1234

Yuki888 [10]

150mm. Is your answer

8 0

3 years ago