WHO WANNA START SOMETHIN

Mathematics

2 answers:

sweet-ann [11.9K]3 years ago

8 0

Lm.ao tbh no because thats all i hear now an days is DRAMA so have a good day and stay safe :)

strojnjashka [21]3 years ago

3 0

Answer:

I an very okay with not doing that lol

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Cheryl went on a 3-hour train ride. The train traveled at an average speed of 75 miles per hour. What was the total distance in

SOVA2 [1]

3 hours x 75 mph = 225 miles

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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 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:

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:

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


Part B:

The mean of a binomial distribution is given by

 $\mu=np \\ \\ =30(0.02) \\ \\ =0.6$

The standard deviation is given by:

 $\sigma=\sqrt{np(1-p)} \\ \\ =\sqrt{30(0.02)(1-0.02)} \\ \\ =\sqrt{30(0.02)(0.98)}=\sqrt{0.588} \\ \\ =0.7668$


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.

5 0

3 years ago

PLEASE HELP I NEEEED THIS CORRECT ANSWER NOW PLEASE I PROMISE IF YOU ARE CORRECT I WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!

Helen [10]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

I need an accurate answer please

kotykmax [81]

x = –6