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3 years ago

PLZZZ HELP!!

2 answers:

ozzi3 years ago

8 0

Put all of the number in order and find the median, which would be 51 and 59 so you'd find the mean of those two numbers, which is 55. After this you would find the median of the smallest number and 55. The smallest number is 40. 40:55, 41:54, 42:53, 43:52, 44:51, 45:50, 46:49, 47:48. 47:48 is the lowest you could get and you would need to find the mean of 47 and 48, once you get 47.5, that is the answer to your question.

sesenic [268]3 years ago

3 0

First we find list the data in order
Then we find the median
We split the data in half and find the median of the first half which is C

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What is the distance between -2/3 and 4/3 on a number line?

soldier1979 [14.2K]

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8 0

2 years ago

Problem 5.A miner is trapped inside a mine and has access to 3 doors. The first door leads to a tunneland can take him to safety

Likurg_2 [28]

Answer:

Expected time is 15 hours for him to get to safety.

Step-by-step explanation:

We define X as the time that this miner would get to safety.

We define Y as the door he chooses initially.

P(Y= 1) = P(Y=2)=P(Y=3) = 1/3

We have E[X|Y=1] = 3

E[X|Y] = 5 hours + E[X}

E[X|Y] = 7 hours + E[X]

Then we have

E[X] = 1/3(3 + 5 + E[X] + 7 + E[X])

We cross multiply

3*E[X] = (15 + 2E[x])

3E[X] - 2E[X] = 15

E[X] = 15

So the time it would take to get him to safety is 15 hours

5 0

2 years ago

a pack rat has 130 piglets and 110 books. She wants to maintain this ratio in her collection but needs to sell some of her items

bija089 [108]

The number of items she should sell from her collection is 24

<h3>How to determine the number of items she should sell from her collection?</h3>

From the question, we have the following parameters that can be used in our computation:

Ratio = Piglets : Books

For 130 piglets and 110 books, we have the following representations

Ratio = 130 : 110

Also, for 13 piglets, we have the following representations

Ratio = 13 : Books

Using the above as a guide, we have the following:

13 : Books = 130 : 110

This can also be rewritten as

Books : 13 = 110 : 130

Multiply the second ratio by 1/10

So. we have

Books : 13 = 11 : 13

By comparison, we have

Books = 11

So, the total items sold is

Items = 11 books + 13 piglets

Evaluate

Items = 24 items

Hence, the number of items is 24