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qaws [65]
3 years ago
14

The number is even, the number is less than -12, and the absolute value of the number is between 9 and 15?

Mathematics
1 answer:
wolverine [178]3 years ago
6 0

Answer:

-14

Step-by-step explanation:

absolute value is just the number disregarding whether it's positive or negative, and the only even number less than -12 that is still under -15 is -14

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The number of goals a hockey team scores over the first 7 games of the season is shown Below
lyudmila [28]

Answer:

The mean standard deviation is 10/5

Step-by-step explanation:

6 0
3 years ago
A new medical test provides a false positive result for hepatitis 2% of the time that is a perfectly healthy subject being teste
Oxana [17]
Given that X <span>be the number of subjects who test positive for the disease out of the 30 healthy subjects used for the test.

The probability of success, i.e. the probability that a healthy subject tests positive is given as 2% = 0.02


Part A:

</span><span>The probability that all 30 subjects will appropriately test as not being infected, that is the probability that none of the healthy subjects will test positive is given by:

</span>P(X)={ ^nC_xp^x(1-p)^{n-x}} \\  \\ P(0)={ ^{30}C_0(0.02)^0(1-0.02)^{30-0}} \\  \\ =1(1)(0.98)^{30}=0.5455
<span>

Part B:

The mean of a binomial distribution is given by

</span>\mu=np \\  \\ =30(0.02) \\  \\ =0.6
<span>
The standard deviation is given by:

</span>\sigma=\sqrt{np(1-p)} \\ \\ =\sqrt{30(0.02)(1-0.02)} \\ \\ =\sqrt{30(0.02)(0.98)}=\sqrt{0.588} \\  \\ =0.7668
<span>

Part C:

This test will not be a trusted test in the field of medicine as it has a standard deviation higher than the mean. The testing method will not be consistent in determining the infection of hepatitis.</span>
5 0
3 years ago
when the driver is in the empty truck, the mass is 2948.35 kilogram. the mass of 1 box of paper is 22.5 kilograms. the driver de
marishachu [46]

Answer:

  0 boxes minimum

Step-by-step explanation:

The mass of the truck and paper must satisfy ...

  22.5b + 2948.35 ≤ 4700 . . . . total truck mass cannot exceed bridge limits

  22.5b ≤ 1751.65

  b ≤ 77.85

The driver can take a minimum of 0 boxes and a maximum of 77 boxes of paper over the bridge.

_____

The question asks for the <em>minimum</em>. We usually expect such a question to ask for the <em>maximum</em>.

7 0
3 years ago
If the average mass of a peacock is 4.95 kilograms, what is the average mass of a peacock In grams?
anyanavicka [17]

Answer:

4950g

Step-by-step explanation:

firstly remember the formula for converting from kg to g

Kilograms ( kg) to grams(g)

1 kg = 1000g

therefore to convert 4.95 kg to g

is 4.95 * 1000

=<u> 4950g</u>

6 0
3 years ago
(6x² + x - 3)(2x² + 1)
Juli2301 [7.4K]
12x^4 +6 +2x^3 +1x -6x^2 -3

12x^4 +2x^3 -6x^2 +1x + 3

i'm not completely sure this is the right answer but i gave it a shot! let me know if i was right or wrong
6 0
3 years ago
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