12/02/21

A distribution of values is normal with a mean of 42.3 and a standard deviation of 49.1. Find P42, which is the score separating the bottom 42% from the top 58%.
This has me 100% lost. I am not sure where to even start.
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12/02/21

Factor the expression

-8x^2+22x-15answer choices a (2x+3)(5-4x)B (2x-3)(5-4x)c(4x+5)(2x-3)d(3-2x)(5-4x)
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12/02/21

pl answer this.

A city planner is mapping out some new features for a triangular park. She sketches the park on grid paper. The coordinates of the vertices of the park are (1, 1), (1, 4), and (−3, 4). The city... more
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12/01/21

i am confused and lost it says to find slope-intercept form of -5,-6 and 6,3

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12/01/21

Find the coordinations of centroid of triangle using given vertices
Find the coordinates of the centroid of the triangle with the vertices A B C   6, 8 , 3, 1 , and 0, 3 .
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12/01/21

find circumcenter of a triangle with given points
3. Given the points A(2,0) B(3,1) and C(7,0) find the coordinates of the circumcenter
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12/01/21

write a two column proof

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12/01/21

find the values of x and y
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12/01/21

find the measure of X and Y
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11/30/21

Probability die roll is 4 or less
The teacher rolls 2 dice. What is the probability that the sum will be 4 or less?
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11/27/21

Solve system by substitution method
9x-y=175x+4y=-27solve the system using the substitution method step by step
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11/27/21

What is P(1≤𝑌<4)?
𝒀 = 𝒚 0 1 30 4 5𝑷(𝒀 = 𝒚) 0.30 0.15 0.40 0.13 0.02E(X) = 12.77
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11/27/21

What is the probability that the amount of cashew nuts, in a randomly selected packet sold by this company, is between 117.5 grams and 120 grams
The amount of cashew nuts per packet (𝑌), sold by a company, can be modelled using a normal random variable with a mean of 115.0 grams and a variance of 4.0 grams.
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11/27/21

What is the probability that the amount of cashew nuts, in a randomly selected packet sold by this company, is more than 113 grams?
The amount of cashew nuts per packet (𝑌), sold by a company, can be modelled using a normal random variable with a mean of 115.0 grams and a variance of 4.0 grams.
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11/26/21

Help me with this stats problems please!
1.Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 237 with 65.8% successes at a confidence level of... more
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11/26/21

Find the probability that more than 70% of the sampled teenagers own a smartphone?
Smartphones: A Pew Research report indicated that 73% of teenagers aged 13–17 own smartphones. A random sample of 150 teenagers is drawn.Find the probability that more than 70% of the sampled... more
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11/26/21

Solve: 1. Mark, who won, went on ----- in the 1998 final. a)having won b)winning c)to win d)to have won
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11/24/21

2SINꝊ - 1 = 0 ...
Solve for if 0° ≤ 𝜃 < 360
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11/24/21

What are the best Test prep books out there for the TOEFL?
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11/22/21

Geometry help!!
A yard stick is placed on the table during a party game. A marker is placed at 11 inches, and labeled A, one labeled B at 24 inches, another labeled C at 26 and another labeled D at 36. A marble is... more
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11/22/21

find slope of line through (2,0) and (5,6)
find the slope of the line through the pair of points (2,0) and (5,6), then name another point on the same line
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11/21/21

If n=22, ¯ x x ¯ (x-bar)=35, and s=6, find the margin of error at a 99% confidence level (use at least three decimal places)
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11/20/21

Math Question on statistics
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 5.9 years, and standard deviation of 0.9 years.The 2% of items with the shortest lifespan will last less... more
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11/20/21

plz help with my stats hw

If n=460 and ˆpp^ (p-hat) =0.64, find the margin of error at a 99% confidence levelGive your answer to three decimals
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11/20/21

if anyone could give me the answer for my stats hw thanksss
If n = 100 and ˆpp^ (p-hat) = 0.9, construct a 99% confidence interval.round to 3 decimals
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