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2 years ago

I will mark as the brainliest answer

Mathematics

1 answer:

Hunter-Best [27]2 years ago

6 0

ratio for the first mix is 3:2 the ratio for the second mix is 4.5:3

Yes, since 3 times 1.5 is 4 and 2 times 1.5 is 3

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HELp!!! 100 POINTS. <br><br> What is the formula of g in terms of f?

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1 year ago

Benny wants to buy a new video game that costs $49.95. He already saved $24.65, and his aunt gave him $15 for mowing her lawn. H

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Answer:

$10.30

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2 years ago

N aquarium tank holds

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3 years ago

Martina read that approximately 10% of all people are left-handed. She wants to design a simulation to approximate the probabili

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2 years ago

Read 2 more answers

Michmoo Computer Company sells computers and computer parts by mail. The company assures its customers that products are mailed

Anastaziya [24]

Answer: (60.858, 69.142)

Step-by-step explanation:

The formula to find the confidence interval for mean :

$\overline{x}\pm z_c\dfrac{\sigma}{\sqrt{n}}$ , where $\overline{x}$ is the sample mean , $\sigma$ is the population standard deviation , n is the sample size and $z_c$ is the two-tailed test value for z.

Let x represents the time taken to mail products for all orders received at the office of this company.

As per given , we have

Confidence level : 95%

n= 62

sample mean : $\overline{x}=65$ hours

Population standard deviation : $\sigma=18$ hours

z-value for 93% confidence interval: $z_c=1.8119$ [using z-value table]

Now, 93% confidence the mean time taken to mail products for all orders received at the office of this company :-

$65\pm (1.8119)\dfrac{18}{\sqrt{62}}\\\\ 65\pm4.142\\\\=(65-4.142,\ 65+4.142)\\\\= (60.858,\ 69.142)$

Thus , 93% confidence the mean time taken to mail products for all orders received at the office of this company : (60.858, 69.142)

8 0

3 years ago