08/07/21

A box with 5 white balls, and 4 balls from which four balls were selected. calculate:
the probability of getting two white balls. the probability of getting a white ball at most. the probability of getting at least two blue balls.
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08/07/21

A die is tossed twice. Given that the sum is greater than 7, what is the chance of getting a pair?
A die is tossed twice. Given that the sum is greater than 7, what is the chance of getting a pair?
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08/07/21

Probability question: A spaceman's supply of oxygen comes from two independent sources.
A spaceman's supply of oxygen comes from two independent sources. Source A has probability 0.9 of working, and Source B has probability 0.8 of working. What is the probability that at least one of... more
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08/06/21

Write a linear function, f, with f(5) = -1 and f(0) = -5 f(x)=?
Kinda stuck need help on this problem.
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08/06/21

find the probability
34% of all college students major in STEM (Science, Technology, Engineering, and Math). If 36 college students are randomly selected, find the probability thata. Exactly 13 of them major in... more
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08/06/21

Finding the probability and distribution
Suppose that the average number of Facebook friends users have is normally distributed with a mean of 122 and a standard deviation of about 58. Assume forty-four individuals are randomly chosen.... more
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08/06/21

Probability Distribution
Suppose that you are offered the following "deal." You roll a six sided die. If you roll a 6, you win $18. If you roll a 3, 4 or 5, you win $3. Otherwise, you pay $2.a. Complete the PDF Table. List... more
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08/06/21

What can be concluded at the the α = 0.10 level of significance?
The average amount of time it takes for couples to further communicate with each other after their first date has ended is 3.53 days.  Is this average shorter for blind dates? A researcher... more
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08/05/21

would you believe that the mathematician's estimate for the population proportion of pennies with post-2000 mint dates is mistaken?Briefly explain your reasoning. 
Suppose a mathematician arrives at the estimate that 70% pennies in circulation were minted after the year 2000. We take a random sample of 5 pennies and only 2 of the pennies (40% ) have post-2000... more
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08/05/21

The boiling temperature of water is 212F at sea level​ (0 feet) but drops about 1.72F for every​ 1,000 feet of elevation.

Water boils at different temperatures at different elevations. The boiling temperature of water is 212°F at sea level​ (0 feet) but drops about 1.72°F for every​ 1,000 feet of elevation. Write a... more
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08/05/21

How do you solve kx+3x=4 and what is x?
How do you solve kx+3x=4 and what is x?
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08/04/21

Can a Random Variable be a Sample or just a Single Value?
In my introductory statistics course, I've seen statements like 'Y1 . . . , Yn is a simple random sample without replacement, of size n, from the population.' and that the CLT applies if 'Y1, . . .... more
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08/04/21

Find the midpoint of the line segment joining the points P1 and P2.
P1 = (k,b)P2 = (0,0) M = Type an ordered pair
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08/04/21

Find the midpoints of the line segment joining the points P1 and P2
P1 = (-1,2)P2 = (2,5)
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08/04/21

C17.4: . The sample showed the average loss was ​$8601 with a standard deviation of ​$1405
The housing market has recovered slowly from the economic crisis of 2008.​ Recently, in one large​ community, realtors randomly sampled 48 bids from potential buyers to estimate the average loss in... more
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08/04/21

C21.7: Find a​ 95% confidence interval for this difference and interpret it in context.
In analyzing the city and highway fuel efficiencies of many cars and​ trucks, the mean difference in fuel efficiencies for the 632 vehicles was 7.36 mpg with a standard deviation of 2.59 mpg. Find... more
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08/03/21

please help showing work
In a survey, 13 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $34 and standard deviation of $4. Find the margin of... more
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08/02/21

How can I calculate this? A box which contains five white balls, and three blue balls from where four balls were selected which were chosen.

Determine:a. the probability of receiving two white balls.b. the probability of receiving at most a white ball.c. the probability of receiving at least two blue balls.
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08/01/21

Having trouble with is question. Please Help!
Suppose the equation of the regression line for the number of emails a person recieves at a particular sales company is given by y=12+18⋅xy=12+18⋅x. Where yy is based on the number of accounts the... more
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08/01/21

What is the measure of angle MAL if quadrilateral GLAM is a rhombus?
What is the measure of angle MAL if quadrilateral GLAM is a rhombus?image: https://ibb.co/vhBwdnpangle MAL = ___ degrees
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08/01/21

Please help quickly on math question related to geometry

Scott wants to make sure that the window he is buying is a rectangle. He has measured the window and knows that the opposite sides are congruent. Of the following choices, what piece of information... more
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08/01/21

statistics and probability
A particular fruit's weights are normally distributed, with a mean of 768 grams and a standard deviation of 20 grams.If you pick 15 fruit at random, what is the probability that their mean weight... more
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07/31/21

HELP Math difficult
The circumference of a circular garden is 106.76 feet. What is the radius of the garden? Use 3.14 for π and do not round your answer.
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07/31/21

Find Probability
Assume the random variable x is normally distributed with mean μ=84 and standard deviation σ=5. Find the indicated probability.​P(67<x<79​)
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07/31/21

Indicated Probability
Assume the random variable x is normally distributed with mean μ=87 and standard deviation σ=5. Find the indicated probability.​P(72<x<83​)
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