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Lerok [7]
2 years ago
12

On discovering that her family had a 70% risk of heart attack, Erin took a treadmill test to check her own potential of having a

heart attack. The doctors told her that the reliability of the stress test is 67%. What is the probability that Erin will not have a heart attack and the test predicts that she will?
A.
0.099

B.
0.201

C.
0.231

D.
0.469
Mathematics
1 answer:
Wittaler [7]2 years ago
7 0
The answer i think is D
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Serjik [45]
They are all correct

4 0
3 years ago
Please Explain/Show Your Work, for each part of the question! Thank You!
mina [271]

Answer:

1. The graph represents a proportional relationship

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Step-by-step explanation:

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3 0
3 years ago
Use a graphing calculator to find the value of the correlation coefficient r to determine if there is a strong correlation among
OlgaM077 [116]

The value for r = - 0.8535 ,  there is strong correlation between the variables.

<h3>What is a correlation coefficient  ?</h3>

Correlation coefficient describes the relationship between the two variables in the data .

The data given is

(1, 7), (2, 5), (3, -1), (4, 3), (5, -5)

Assuming Linear Regression ,

The data is plotted on the graphing calculator

The value for r = - 0.8535

as the value is in the range of - .85 to -1 , therefore there is strong correlation between the variables.

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brainly.com/question/15577278

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3 0
2 years ago
Need Help Since Schoo is Closed
marishachu [46]

Answer:

32

Step-by-step explanation:

let a = 5

a² + 7 | Original equation

5² + 7 | Substitution of a as 5

25 + 7 | 5 to the power of 2 is 25, as 5*5 = 25.

32       | 25 + 7 = 32

4 0
4 years ago
Read 2 more answers
What is the area of a circle with a diameter of 16?
Oksana_A [137]

If the diameter is 16, then the radius is 8.

A=(pi) r^2

8*8=64

64*3.14159265359=201.06

201.06 is your answer.

-TheOneandOnly003


4 0
3 years ago
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