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2 years ago

5

Someone?? Can you help me with this??

1 answer:

Vesna [10]2 years ago

3 0

Answer:

which class question is this

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A random sampling of a company's monthly operating expenses for n=36 months produced a sample mean of $5474 and a stan-dard devi

lilavasa [31]

Answer with explanation:

Mean of the sample(m) = $ 5474

Standard deviation of the sample (S)=764

Number of observation(n)=36

$Z_{90 \text{Percent}}=Z_{0.09}=0.5359$

$z_{score}=\frac{\Bar x-\mu}{\frac{S}{\sqrt{n}}}\\\\0.5359=\frac{5474- \mu}{\frac{764}{\sqrt{36}}}\\\\0.5359=\frac{5474- \mu}{\frac{764}{6}}\\\\764 \times 0.5359=6 \times (5474- \mu)\\\\409.4276=32844-6 \mu\\\\6 \mu=32844 -409.4276\\\\ 6 \mu=32434.5724\\\\ \mu=\frac{32434.5724}{6}\\\\ \mu=5405.76$

So, Mean Monthly Expenses of Population =$ 5405.76, which is 90% upper confidence bound for the company's mean monthly expenses.

4 0

2 years ago

What is the fifth term of the sequence whose first term is 10 and whose common ratio is 1/2?

Cloud [144]

Answer:

D

Step-by-step explanation:

Common ratio of half means that to get each successive terms, you have to multiply the preceding term by half.

Since first term is 10

2nd term is $10*\frac{1}{2}=5$

3rd term is $5*\frac{1}{2}=\frac{5}{2}$

4th term is $\frac{5}{2}*\frac{1}{2}=\frac{5}{4}$

5th term is $\frac{5}{4}*\frac{1}{2}=\frac{5}{8}$

Answer choice D is right.

8 0

3 years ago

Read 2 more answers

PLS help meeeeeeee!!!!!! will mark as BRAINLIEST

Zolol [24]

We are asked to find 7 is what percent to 30.

We will use proportions to solve our given problem.

Let us assume that 7 is n% of 30. So we can set a proportion as:

$\frac{n}{100}=\frac{7}{30}$

Let us solve for n.

$\frac{n}{100}\cdot 100=\frac{7}{30}\cdot 100$

$n=\frac{7}{3}\cdot 10$

$n=\frac{70}{3}$

$n=23.333$

Therefore, 7 is $23.333\%$ of 30.

3 0

2 years ago

Write the value of the digit of 281'480'100

topjm [15]

Ummmm....
one hundred thousands place
i don't get what u mean by it

6 0

2 years ago

2( <br> 5<br> 1<br> <br> m− <br> 5<br> 2<br> <br> )+ <br> 5<br> 3<br>

Fantom [35]

Answer:

uh I need the question...

Step-by-step explanation:

5 0

2 years ago