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dusya [7]
3 years ago
6

Heart failure is due to either natural occurrences (86%) or outside factors (14%). Outside factors are related to induced substa

nces or foreign objects. Natural occurrences are caused by arterial blockage, disease, and infection. Suppose that 18 patients will visit an emergency room with heart failure. Assume that causes of heart failure between individuals are independent.
Round your answers to three decimal places (e.g. 98.765).

(a) What is the probability that 3 individuals have conditions caused by outside factors?

Probability =

(b) What is the probability that 3 or more individuals have conditions caused by outside factors?

Probability =

(c) What is the mean and standard deviation of the number of individuals with conditions caused by outside factors?

Mean =

Standard deviation =
Mathematics
1 answer:
gayaneshka [121]3 years ago
7 0
<span>Given are the following data: 

Heart failure causes:

84% natural occurence
16% outside factors
18 individuals (sample size) 

1. What is the probability that 3 individuals have conditions caused by outside factors?

Probability = 3/18 * 0.16 = 0.0267 or 2.67%

</span><span /><span>
</span>
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Gre4nikov [31]

Answer: total profit = $418

======================================================

Work Shown:

June

Income = (4 lawns)*($27 per lawn) = $108

Expenses = ($32 for gas)+($12 for trim line) = $44

Profit = income - expenses = 108-44 = $64

----------------------------

July

Income = (12 lawns)*($20 per lawn) = $240

Expenses = ($89 for gas)+($29 for blade sharpening) = $118

Profit = income - expenses = 240 - 89 = $151

----------------------------

August

Income = (16 lawns)*($20 per lawn) = $320

Expenses = ($101 for gas)+($16 for oil) = $117

Profit = income - expenses = 320-117 = $203

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Total profit = (june profit)+(july profit)+(august profit)

Total profit = (64) + (151) + (203)

Total profit = $418

If the final result was negative, then we would call this a loss. However, we have a positive value, so we go with a profit.

8 0
3 years ago
What is the value of x?​
pogonyaev

Answer:

1 is the value of x

Step-by-step explanation:

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4 0
3 years ago
I tried many times to solve this question: Joy makes 6,5 litres soup correct to the nearest 0.5 litres. She serves the soup in 2
Paraphin [41]

Joy makes 6.5 litres soup correct to the nearest 0.5 litres. She serves the soup in 280ml portions correct to the nearest 10ml. 22 people order this soup. Does joy definitely has enough soup to serve the 22 people.

Answer:

Yes, Joy definitely does has enough soup

Step-by-step explanation:

From the question, we know,

Joy make 6.5 litres of soup

Serves it in 280ml portions

Step 1

We convert the portions to liters

1 ml = 0.001 litre

280 ml

= 280ml × 0.001 litre/1 ml

= 0.28litre

Step 2

We divide 6.5 liters by 0.28 to find out how many people can be served

= 6.5 ÷ 0.28

= 23.2142857143 people

We can see that 6.5 liters soup can serve 23 people approximately.

Therefore, Yes, Joy definitely does has enough soup to serve 22 people

4 0
3 years ago
Kelly has 50% more money than Luis. Luis has $40. If Luis gets $8 more, will Kelly still have more money than Luis? What percent
OverLord2011 [107]

Answer:

Kelly will still have more money than Luis

Kelly will have 25% more

Step-by-step explanation:

Let x represent the amount of money Kelly has and y, Luis

Luis has $40

and Kelly has 50% more money than Luis

Therefore, Kelly has;

50% of $40 + $40

= 0.5*40 + 40

= $60

If Luis gets $8 more, Luis will have;

$8 + $40 = $48

since Luis' $48 is less than Kelly's $60, Kelly will still have more money than Luis

Difference in their money = $60 - $48 = $12

Therefore, Kelly will have;

12/48 * 100 more than Luis

= 25% more

8 0
3 years ago
Which is the inverse of the function f(x) = x2 − 4?<br><br><br> y = x2 − 4
4vir4ik [10]

Answer:

\sqrt{x+4} \\\\-\sqrt{x+4}

Step-by-step explanation:

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