04/11/23

Statistics and probability
. The College Entrance Examination Board scored are developed to approximate a normal distribution withmean 500 and standard deviation 100. What proportion of test takers can we expect to score in... more
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04/08/23

Suppose there's a company that's making ID badges for its employees.
Suppose there's a company that's making ID badges for its employees. IDs are made up of one vowel (A, E, I, O, U) and three numbers (0,1,2,3,4,5,6,7,8,9)  what's the total number of badges that can... more
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04/07/23

Suppose there's a company that's making ID badges for its employees. IDs are made up of one vowel (A, E, I, O, U) and three numbers (0,1,2,3,4,5,6,7,8,9)
what's the total number of badges that can be created? what's the total number of badges that can be created without repeating a number?
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04/05/23

area and distance

The goal of this problem is to overestimate and underestimate the area under the graph of 𝑓(𝑥)=−20+12𝑥−𝑥2 from 𝑥=2 to 𝑥=10 using an “upper sum” and “lower sum” of areas of 44 rectangles of equal... more
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04/04/23

calculus word problem!!!
You are offered and investment opportunity that will produce continuous income at a constant rate of 1000 dollars/year for 20 years. If the annual interest rate is 8%, continuously compounded, what... more
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04/04/23

find the distance a spring moves using velocity

The distance an oscillating (moving) spring travels in its first  seconds of motion, if it moves according to the velocity equation  with velocity units of m/s, is:
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04/03/23

Pull 2 green marbles out of a bag containing three green and three blue marbles One pull.
A bag contains six marbles: three blue and three green. What is the probability of blindly reaching intothe bag and pulling out two green marble on only one pull?
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04/03/23

Which of these countries has the greatest population density? Which has the least?

Use the chart below to answer the questions: CountryPopulation (1997 estimate)Area (square km) Indonesia 203,479,000 1,904,569  Denmark 5,248,000 42,077 Ghana 18,339,000 237,533 Which of... more
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03/29/23

What is the median IQ score for this sample?
Q scores are collected from a sample of students at a large university. The scores are shown below.99, 100, 105, 104, 102, 105, 105, 121, 104What is the median IQ score for this... more
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03/29/23

Please help me to answer this question? Which one would be the right conclusion?
The distribution of the salaries at a small business is strongly skewed with many people making very modest salaries and a few making very large salaries. Which measure of center, mean or median,... more
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03/23/23

Scores on a 100-point final exam administered to all applied calculus classes at a large university are normally distributed with a mean of 69.5 and a standard deviation of 26.45.
Scores on a 100-point final exam administered to all applied calculus classes at a large university are normally distributed with a mean of 69.5 and a standard deviation of 26.45.What percentage of... more
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03/22/23

Statistics Question
The actual volumes of quart-size bottles of Heinz Ketchup are uniformly distributed from 31.46 to 32.6 fluid ounces. Find the standard deviation in volumes of quart-size Heinz Ketchup bottles (in... more
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03/22/23

Statistics Question

Suppose that the value of a stock varies each day from $10.82 to $29.17 with a uniform distribution.Find the upper quartile; 25% of all days the stock is above what value? (Enter your answer to the... more
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03/21/23

In the card game Magic: the Gathering, spells are cast using mana produced by “land” cards. Suppose your deck has 60 cards, 24 of which are lands.
In the card game Magic: the Gathering, spells are cast using mana produced by “land” cards. Suppose your deck has 60 cards, 24 of which are lands.(a) What is the probability that your opening hand... more
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03/20/23

please help solve
The lengths of pregnancies in a small rural village are normally distributed with a mean of 269 days and a standard deviation of 17 days.In what range would you expect to find the middle 98% of... more
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03/16/23

Suppose a committee is to be formed with 5 engineers and 3 consultants selected randomly from a group of 8 engineers and 3 consultants.
Suppose a committee is to be formed with 5 engineers and 3 consultants selected randomly from a group of 8 engineers and 3 consultants. (a) What is the probability that engineer Elizabeth and... more
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03/10/23

Solve the integral 2 on top and 1 on the bottom.

12∫x2/x3+1 dx
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02/27/23

Sigma Notation and Riemann Sums

Approximate the area under the curve y = x^2 from x = 3 to x = 5 using the Right Endpoint approximation with 4 subdivisions.
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02/25/23

In a certain city the temperature (in °F) t hours after 9 AM was modeled by the function T(t) = 48 + 13 sin 𝜋t 12 .
Find the average temperature Tave during the period from 9 AM to 9 PM. (Round your answer to the nearest whole number.)Tave =  °F
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02/24/23

Business Statistics - Probability
The speed with which utility companies can resolve problems is very important. GTC, the Georgetown Telephone Company, reports it can resolve customer problems the same day they are reported in 70%... more
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02/24/23

Buisiness Statistics - Probability
The speed with which utility companies can resolve problems is very important. GTC, the Georgetown Telephone Company, reports it can resolve customer problems the same day they are reported in 70%... more
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02/23/23

How To Problem Solve With Quadratics
an object is dropped from 28 feet below the tip of the pinnacle atop a 928 ft tall building. the height H of the object after T seconds is given by the equation h=-16t^2 +900. find how many seconds... more
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02/22/23

Help me pls! due soon
You deposit $400 each month into an account earning 4% interest compounded monthly.a) How much will you have in the account in 25 years?$b) How much total money will you put into the account?$c)... more
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02/17/23

Probability sat
For some particular website, the password must start with A or B there must be 5 more characters, and each of the characters may be a numeric digit or letter of the alphabet how many diffrent... more
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02/16/23

Graphing and solutions
Graph the system below and write its solution.Y=-1/3x-2-x-3y=6
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