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4 years ago

Can someone please help me with this!! Please and Thank You!!!

Mathematics

1 answer:

harina [27]4 years ago

5 0

Answer:

17,18, or 19

Step-by-step explanation:

take 24 and subtract 7 then because you need three use that number and the two before it

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alex runs on the track at the school each weekday morning if he runs 5.9 miles each day about how much does he run every month

vovangra [49]

Since Alex runs on weekday mornings he most likely runs 118 miles a month.

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3 years ago

Solve the inequation : 2(3-4x) + 3 < 49

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3 years ago

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3 years ago

1) Ten samples of a process measuring the number of returns per 100 receipts were taken for a local retail store.

densk [106]

Answer:

E) .0863

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Solution to the problem

For this case we can find the sample proportion for each observation with the following formula:

$\hat p = \frac{X}{n}$

Where X represent the number of returns and n =100 for each case since the standard value used. Using the last formula we got:

$p_1 = \frac{10}{100}=0.1$

$p_2 = \frac{9}{100}=0.09$

$p_3 = \frac{11}{100}=0.11$

$p_4 = \frac{7}{100}=0.07$

$p_5 = \frac{3}{100}=0.03$

$p_6 = \frac{12}{100}=0.12$

$p_7 = \frac{8}{100}=0.08$

$p_8 = \frac{4}{100}=0.04$

$p_9 = \frac{6}{100}=0.06$

$p_{10} = \frac{11}{100}=0.11$

And now witht those values we can find the sample mean of proportions with the following formula:

$hat p = \frac{\sum_{i=1}^n p_i}{n}= \frac{0.1+0.09+0.11+0.07+0.03+0.12+0.08+0.04+0.06+0.11}{10}=0.081$

And we can find the standard error with the following formula:

$SE= \sqrt{\frac{\hat p (1-\hat p)}{n}}=\sqrt{\frac{0.081(1-0.081)}{10}}=0.0863$

So then the best option on this case is given by:

E) .0863

6 0

3 years ago

uring a hoagie sale fundraiser, a ski club sold 42 Italian hoagies and 53 roast beef hoagies. What is the ratio of Italian hoagi

Serhud [2]

Given that the ski club sold 42 Italian hoagies and 53 roast beef hoagies, they sold a total of 95 hoagies. The ratio of Italian hoagies to total number of hoagies sold is obtain by dividing 42 by 95. Mathematically,
ratio = 42 / 95

6 0

3 years ago