07/28/20

What’s the probability?
Assume that two marbles are drawn without replacement from a box with 1 blue, 3 white, 2 green and 2 red marbles. Find probability that both marbles are white. Round to nearest thousandth
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07/28/20

please answer this ASAP
Netflix Addiction. A research was conducted to assess the impact of Netflix on students’ academic performance. A random sample of 300 students resulted in a sample mean of 10.7 hours (watched per... more
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07/26/20

Null Hypothesis

Researchersareinterestedinthemeanageofacertainpopulation.Arandomsampleof10individuals ̄drawn from the population of interest has a mean of X = 27. Assuming that the population is approximately... more
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07/26/20

Statistics help!
In a test of the effectiveness of garlic for lowering cholesterol, 48 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment.... more
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07/25/20

Determine the probability of landing a 4 on a spinner & rolling a 6 on a die
Probability of rolling a 6 on a die & landing a 4 on a spinner
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07/24/20

 h(t)=−16t2+64t+80 
A person standing close to the edge on top of a 80-foot building throws a ball vertically upward. The quadratic function h(t)=−16t2+64t+80 models the ball's height about the ground, h(t), in... more
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07/24/20

Finding the positive, negative complex zeros
The equation: f(x)=-13x^10-11x^8-7x^6-7My question is I found and I believe that it is correct that there are 0 negative and/or positive roots, as I see from graphing, but I cannot tell how many... more
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07/24/20

quadratic functions
Solve (2x + 3)(x − 7) = 15 using two different methods. Describe situations where each might be more advantages or helpful.
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07/21/20

I have a quarter, three dimes, two nickles in a bag. I pick a coin from the bag. Then, without replacing it, pick another coin. What is the probability of picking a quarter, then a dime?

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07/21/20

Suppose a jar contains 19 red marbles and 10 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.
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07/21/20

A jar contains 8 pennies, 5 nickels and 3 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins.
Find the probability X = 10.Find the probability X = 11. Find the expected value of X. 
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07/21/20

A bag contains 8 white counters, 3 black counters, and 6 green counters. What is the probability of drawing
(a) a white counter or a green counter?(b) a black counter or a green counter?(c) not a green counter?
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07/21/20

What’s the probability of landing a 4 on a spinner & rolling a 6 on a die?
Determine the probability of landing a 4 on a spinner & rolling a 6 on a die
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07/21/20

Find the perimeter of the rectangle.
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07/21/20

Find the area of this shape
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07/20/20

How many 4-character passwords can you make from the letters A, B, C, D, and E if you allow no repetition? In other words, you can have ABCD, but not AABC or ABCA.
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07/20/20

Given the following information: P(A) = 0.58 P(B) = 0.34 P(A and B) = 0.12 P(B given A) = 0.21
What is the probability of A or B? Round your answer to the nearest hundredth as needed  .P(A or B) = 
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07/20/20

A jar contains 5 pennies, 5 nickels and 8 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins.
A. Find the probability X = 10.B. Find the probability X = 11C. Find the expected value of X. 
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07/20/20

A math class consists of 38 students, 24 female and 14 male. Three students are selected at random, one at a time, to participate in a probability experiment (selected in order without replacement).
A. What is the probability that a male is selected, then two females?B. What is the probability that a female is selected, then two males?C. What is the probability that two females are selected,... more
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07/20/20

Testing a Claim about a Proportion
A genetic experiment involving peas yielded one sample of offspring consisting of 427427 green peas and 167167 yellow peas. Use a 0.05 significance level to test the claim that under the... more
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07/20/20

Parabola , finding the discriminant

h(t)=-3 t^(2)+122I am trying to understand discriminant and what they meanIf I plug my numbers into the equationax^2+bx+c=03(3) + 0 - 122 = -113Does that mean my discriminant is 0 because I dont... more
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07/19/20

Find the value of k so the remainder is zero. (x^3-kx^2+2x-4) ÷ (x-2)
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07/19/20

Solving Systems of Equation with row operations
3x - y + 5z = 14 2x + 3y + 4z = 7 x + y + z = 2
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07/19/20

The price of a notebook was $3.45 yesterday. Today, the price rose to $3.95. Find the percentage increase. Round your answer to the nearest tenth of a percent.
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07/19/20

to the nearest cent, for the company to make the maximum profit.y=−x 2 +89x−747
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