jasonoliva13

22.08.2021 • 

Mathematics

Referring to the table, which of the following will be a correct conclusion? A researcher would like to analyze the effect of muscle injury on the number of physical therapy intervention programs received. She takes a random sample of 4 patients. For these 4 patients, she finds out how many times each had a muscle injury and how many physical therapy intervention programs they received. These data are presented in the table below:

Patient Number of Muscle Injuries Number of Physical Therapy Programs Received
1 1 4
2 2 6
3 1 3
4 0 1

The results of the simple linear regression are provided below.

Y= 1+2.5X; S subscript Y X end subscript = 0.5, S subscript b 1 end subscript = 0.35355; 2-tailed p value = 0.0192 (testing beta 1)

Ответ:

penacesar18p9jrdh

01.01.2020

Mathematics

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Universal law of radioactive decay states that:

Where No is an initial number of atoms, N is a number of atoms after time t and lambda is the decay constant. We can use mas of an atom instead of a number of atoms because we know that every atom has the same mass.

In order to calculate how many atoms are left after 500 days, we need to find decay constant.
We can do this by using the information given in the problem. We know that after 12 days we are left with 55.45 grams and we know the initial amount. With this information we can calculate decay constant:

Now we simply plug in t=500 and calculate the

The final answer is D (20.88g).

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