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padilas [110]
3 years ago
15

For the data set 16, 17, 18, 19, 30, the mean is 20. What is the

Mathematics
2 answers:
tekilochka [14]3 years ago
8 0

Answer: the answer is 4

Step-by-step explanation: hope this helps! Have a great day!

torisob [31]3 years ago
6 0

Answer:

4

Step-by-step explanation:

i. d k I just entered the data into calculator

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The probability density function of the time it takes a hematology cell counter to complete a test on a blood sample is f(x)=0.0
uysha [10]

Answer:

a) 20%

b) 40%

c) Mean = 62.5 seconds; Variance = 52.083 seconds

Step-by-step explanation:

The time it takes a hematology cell counter to complete a test on a blood sample is continuously distributed over the period of 50 to 75 seconds with probability f(x) = 0.04.

a) The percentage of tests require more than 70 seconds is:

P(X>70) = 1- \frac{70-50}{75-50} \\P(X>70) =0.2 = 20\%

b)The percentage of tests that require less than one minute (60 seconds) is:

P(X70) =0.4 = 40\%

c) The mean and variance of a continuous distribution are determined by:

M=\frac{A+B}{2}=\frac{50+75}{2}\\ M= 62.5\ seconds\\\\V=\frac{(B-A)^2}{12}=\frac{(75-50)^2}{12}\\  V= 52.083\ seconds

Mean = 62.5 seconds.

Variance = 52.083 seconds.

3 0
3 years ago
How do I solve 8x-5=100
GrogVix [38]

8x+5=100

-5 -5

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

8x/95

answer: 11.875

Hope this helps!

7 0
3 years ago
Read 2 more answers
Pls help you can do either one
iren [92.7K]

Answer:

4. 20.8 in

5. 60 degrees

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Step-by-step explanation:

6 0
3 years ago
What is mechanical energy? Give an<br> example,
Inessa [10]

Answer:

mechanical energy ✨ is a form of energy it is all the energy that an object has because of it motion

Step-by-step explanation:

like an bow and arrow or hitting a hammer on a nail

5 0
3 years ago
I dont understand the question
Nonamiya [84]
<h3>Answer: Choice C)   x^4 - 2</h3>

Explanation:

If the exponent is negative, then that means we apply the reciprocal. So something like x^(-2) becomes 1/(x^2). A polynomial cannot have a variable in the denominator like this. So we can rule out choices A, B, and D. Choice C is the only thing left. It is a polynomial because the exponent is a positive whole number.

7 0
2 years ago
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