06/02/20

A drug is being tested on lab mice. 80% of mice die when injected and 20% of mice can resist this drug. For his research, a scientist needs 5 resistant mice.
What is the probability that the scientist killed 25 mice till he got 5 resistant mice in total?
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06/02/20

Probability and statistics

A binary message is transmitted as a signal that is either -1 with probability of 1-p or +1 with probability of p. The communication channel corrupts the transmission with additive Gaussian noise... more
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06/01/20

The product of two binomials, u(x) and v(x), is a binomial of degree 8 with a positive leading coefficient. What must be true about the sum of u(x) and v(x)?
Here are the choices: A. It is a binomial of degree 4.B. It is a binomial of degree 8.C. It is a monomial of degree 4.D. It is a monomial of degree 8.
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06/01/20

Please I need help
Suppose that at a busy traffic junction, the probability p of an individual car having an accident is 0.0001.During a certain part of the day, 100 cars pass through the junction. What is the... more
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05/31/20

If you flip a fair coin 7 times, what is the probability that you will get exactly 4 tails?
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05/31/20

A random variable, Y, has a uniform distribution over the interval (0, θ). What is the expected value and variance of Y from first principles?
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05/31/20

A local union has ten members, four of whom are men. Three of the members are chosen by a lottery to represent the union on a bargaining council. Find the probability of each event.

a) Two women and one man are chosenb) At least one man is chosen
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05/30/20

The chosen President has Calculus as a focus and the chosen Vice-President has Statistics as a focus?
The Math Club is picking names out of a hat to determine who will serve as the Executive for their group. The person whose name is drawn first will serve as the President, and the person whose name... more
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05/29/20

A normal distribution has mean μ and standard deviation σ . An x-value is randomly selected from the distribution. Find P(x≤μ+2σ)
A normal distribution has mean μ and standard deviation σ. An x-value is randomly selected from the distribution. Find P(x≤μ+2σ)
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05/27/20

Set math help, please explain step by step.
Q. In a survey conducted for three perfumes, it was found that 40% of the respondents used Fa, 25 % used Havoc, and 60 % used Byredo. 16% used none of the three perfumes, whereas 15% of the... more
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05/27/20

Word problems in calculus
The base and sides of a container is made of wood panels. The container does not have a lid. The base and sides are rectangular. The width of the container is x cm . The length is three times the... more
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05/27/20

Find the average, standard deviation, and proportion
The speeds of cars on main highway are approximately normal. Data collected at a certain point shows at 95% of the cars travel at the speed less than 140 km/h and 10% travel has been less than 90... more
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05/27/20

Identify the conic section that the given equation represents. x^2 − 3xy + 5y^2 − 28x + 16y − 30 = 0

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05/25/20

please need help as soon as possible!
Question 1: Identify the diameter of the disc.Assume that a chord through the 10 in. segment passes through the center of the circle.A.) 20 in.B.) 24.4 in.C.) 14.4 in.D.) 22 in.Question 2: Identify... more
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05/25/20

please explain when we use double integral for finding the volume and when we use triple integral for that ?
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05/24/20

please solve this

x^2+y^2<a^2∫∫ x^2y^2dA
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05/24/20

please find this :
∫∫ xdA if x>1 and x^2+y^2<2
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05/24/20

if D =x^2+y^2<a^2 then :
∫∫ ΙxΙ dA
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05/23/20

Not sure how to determine PMF
In random access communication protocols a population of users is contending for the use of a common channel to transmit their packets, without the control and supervision of a master station. In... more
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05/23/20

According to a survey, 60% of people have a dog. If 5 people are selected randomly, what is the probability that at least 2 of them have a dog? Round your answer to the nearest tenth of a percent.
According to a survey, 60% of people have a dog. If 5 people are selected randomly, what is the probability that at least 2 of them have a dog? Round your answer to the nearest tenth of a percent.
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05/23/20

Need help determining PDF, please.
Given are two random variables X and Y for which the joint probability density function fX,Y (x, y) is given by: fX,Y (x, y) = 0.5xy for 0 ≤ x ≤ y ≤ 2fX,Y (x, y) = 0 otherwise.Let Z = Y − X.... more
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05/23/20

What is an equation of the line that passes through the point (6,1) and is parallel to the line x+3y=15x+3y=15?
What is an equation of the line that passes through the point (6,1) and is parallel to the line x+3y=15?
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05/22/20

Answer this T/F question!!
If  has a root, then Newton's Method starting at  will approximate the root nearest .
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05/22/20

f(x) = sin x. The equation f(x) = k has two solutions in [0, 2π]. One of the solutions is x = a.

What is the other solution? How many solutions would f(bx) = k have in [0, 2π]?
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05/22/20

log x+6(2x^2-7x+16)=2
solve for all values of x
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