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Likurg_2 [28]
3 years ago
12

If one set of 16 ping-pong balls cost $8, how much will 320 ping-pong balls cost???

Mathematics
1 answer:
baherus [9]3 years ago
7 0
2,560 :) you have to times 8 by 320 8x320=2,570
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denpristay [2]

Answer:

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Step-by-step explanation:

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3 years ago
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How do I factor 8v2-8v-448=0?
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Factor it should be
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3 years ago
George and Cameron went on a bycicle trip. They took a bus to their starting point, and then biked the rest. They traveled 325 k
pashok25 [27]

Answer:

Step-by-step explanation:

Let the distance travelled by bus be x and the distance travelled be bike be (x+75)

Finally

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5 0
3 years ago
Your bedroom wall is 221 inches wide. You want to hang two posters, each 28 inches across, with an equal space between each post
olga2289 [7]

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5 0
2 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
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