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zaharov [31]
3 years ago
8

Makayla conducted an experiment on the 7th grade class. She took the resting heart rate of 20 of her classmates and then had the

m walk for one mile and took their heart rates again. She used the data that she collected to make the dot plots below.
Based on Makayla's data, the mean resting heart rate is 82 beats per minute with a mean absolute deviation of
. The mean heart rate after walking one mile is 96 beats per minute with a mean absolute deviation of
.

From the data, Makayla concluded the students' heart rates had less variability before or after walking one mile?

Submit

Mathematics
1 answer:
Gekata [30.6K]3 years ago
3 0

The mean absolute deviation will show us on average how far each of all the data points from the graph that Makayla collected are from the mean. To calculate it you simply have to use the formula shown in the attachment. It is very easy but will take you like 5 minutes to solve. Use it for each data set.



Data Set’s

Resting Heart Rate

Heart Rate After Walking One Mile


<span>I hope this helps, Regards.</span>

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a) 11% probability that the first patient with heart failure that enters the emergency room has the conditions due to outside factors.

b) 0.0871 = 8.71% probability that third patient with heart failure that enters the emergency room is the first one due to outside factors.

c) The mean number of heart failure patients with the condition due to natural causes that enter the emergency room before the first patient with heart failure from outside factors is 9.09.

Step-by-step explanation:

We have these following probabilities:

89% probability that a patient has heart failure due to natural occurrences.

11% probability that a patient has heart failure due to outside factors.

A) What is the probability that the first patient with heart failure that enters the emergency room has the conditions due to outside factors?

We assume that causes of heart failure between individuals are independent, which means that the probabilities are the same for each patient. So:

11% probability that the first patient with heart failure that enters the emergency room has the conditions due to outside factors.

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First two due to natural occurrences, each with 89% = 0.89 probability.

Third due to outside factors, with 11% = 0.11 probability. So

0.89*0.89*0.11 = 0.0871

0.0871 = 8.71% probability that third patient with heart failure that enters the emergency room is the first one due to outside factors.

C) What is the mean number of heart failure patients with the condition due to natural causes that enter the emergency room before the first patient with heart failure from outside factors?

11% with outside factors, so the mean number of patients before the first with outside factors is given by

m = 1/0.11 = 9.09

The mean number of heart failure patients with the condition due to natural causes that enter the emergency room before the first patient with heart failure from outside factors is 9.09.

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