2 years ago

Can someone please help me

Mathematics

1 answer:

zhuklara [117]2 years ago

7 0

So what is the question?

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3 years ago

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D. The velocity of the bike when Jack stopped pedaling.

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3 years ago

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Alan deposited $300 into a savinga account. At the end of the first year, the amount of money in the account has increased to $3

Sergeeva-Olga [200]

The Percent increase is 12%

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3 years ago

A recent poll of 700 people who work indoors found that 278 smoke. if the researchers want to be 98% confident of their results

Mice21 [21]

Answer:

We are given:

$\hat{p}=\frac{278}{700}=0.397$

$z_{\frac{0.02}{2}}=2.33$ is the critical value at 0.02 significance level

$E=0.035$ is the margin of error

Therefore, the required sample size is:

$n=\hat{p}(1-\hat{p}) \left(\frac{z_{\frac{0.02}{2}} }{E} \right )^{2}$

$=0.397(1-0.397) \left( \frac{2.33}{0.035} \right)^2$

$=0.239391 \times 4431.755102$

$=1060.922286 \approx 1061$

Therefore, the required sample size n = 1061

5 0

3 years ago

Max And His father plan to build a skateboard "fun box". Max has to buy materials. He has 65$ saved up so far. Max needs to buy

Harrizon [31]

Answer:

yes he will have enough money

he will have 56.64

Step-by-step explanation: you can do this two ways i did 65 - 1.89 then did that answer - 3.98 then that answer -2.49 that gave me 56.64

the other way you can do this is by adding 1.89 + 3.98 + 2.49 = the amount you need to subtract with 65 - the amount then you get 56.64

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2 years ago