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Furkat [3]
3 years ago
9

Expression for "the sum of a and 4'

Mathematics
2 answers:
Masteriza [31]3 years ago
5 0
Answer: a + 4
explanation: sum means what comes from two numbers being added. so you just need to add a and 4
Bad White [126]3 years ago
5 0
Sum means add so it’ll be a + 4
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Answer:

0.0098

Step-by-step explanation:

Given,

  • Probability of test is positive if the person has disease, P(T/D)=0.99

Probability of test is negative if the person has disease,

P(T'/D) = 1-0.99 = 0.01

  • Probability of test is negative if the person hasn't disease, P(T'/D')= 0.99

Probability of test is positive if the person hasn't disease,

P(T/D') = 1 - 0.99 = 0.01

  • Probability of occurrence of disease, P(D) = 0.0001

Probability of not occurrence of disease,

P(D) = 1 - 0.0001 = 0.9999

Probability that test will be positive either disease is present or not,

P(T) = P(T/D).P(D)+P(T/D').P(D')  

      =0.99 x 0.0001 + 0.01 x 0.9999

      = 0.000099 + 0.009999

      = 0.010098

So, the probability that the person will have disease if the test is positive,

P(D/T)\ =\ \dfrac{P(T/D).P(D)}{P(T)}

           =\ \dfrac{0.99\times 0.0001}{0.010098}

            = 0.0098

So, the required probability will be 0.0098.

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Answer:

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Step-by-step explanation:

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Amanda lives in Fairbanks, Alaska. She records the low temperature for five days.
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Answer:

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Step-by-step explanation:

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In mathematics. central tendency is the tendency of data values to cluster around some central value. What does a measure of var
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Answer:

Measures of variability would describe how the central tendency is influenced by the data. Since the central tendency is the tendency of data values to cluster around some central value, then measures of variability would show how strong the central tendency is.

Hope this helps!

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94/100 mile in total
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