06/11/23

basic integrals 13
Find f such that f′(x)=10x−7​, f(9)=0.
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06/11/23

Describe the x-values at which f is differentiable. (Enter your answer using interval notation.)
f(x) 3x -------- x+4
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06/08/23

Equation Involving Trigonometric Identities
Solve this equation for 0 ≤ θ < 2π:tanθsinθ - 4tanθ = -3tanθ
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06/06/23

Calculus math question
If f(x)= 7+5x-4x2, find f'(3)
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06/01/23

Having a hard time solving for this limit.
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05/30/23

Statistics, Delta Method, Central Limit Theorem
Let {X_n} be a sequence of random variables such that \sqrt{n}(X_n-\theta) converges in distribution to N(0,\sigma^2). The function g(x) is differentiable at theta and we have g'(\theta) eq 0,... more
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05/29/23

central limit theorem
An unknown distribution has the following parameters: µx = 45 and σ x = 8 a sample size of 50 is drawn randomly from the population. Find the 80th percentile for the sum of the 50 values of x
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04/27/23

what does H(T)= algebra problem
T H(t)0.5 78.7251 891.5 96.8252 102.22.5 105.1253 105.6A) Using your calculator to do a quadratic regression, express the... more
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12/08/22

I NEED THIS ANSWERED ASAP! THANK YOU IN ADVANCE!
The table below lists salaries (in thousands of dollars) from a sample of people with degrees in 3 different... more
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07/26/22

Show that x=10, y = 4, and z = 7 is a solution to the system below without solving the system formally x+2y+z=25 4x-y-5z=1 -2x-y+82=32
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07/22/22

Ella is deciding between two cell phone plans; plan A: $35 plus 5 cents/min; plan B: $65 for unlimited minutes; which plan should she choose
Ella is deciding between two cell phone plans: plan A: $35 plus 5 cents/minplan B: $65 with unlimited minuteswhich plan should she sign up for?
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07/15/22

Method of Moment Estimators
A sample of 4 observations (0.4, 0.7, 0.7, 0.9) collected from a continuous distribution with density,f(x) = θ*(x^(θ−1)) ; 0 < x < 1Estimate θ by the method of moment.
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07/15/22

What is the probability of winning the jackpot for the fifth time on the twentieth attempt?
Slot machines have three drums with the same number of positions on each drum. Each position contains a symbol. When you pull the lever on the machine, the drums spin. Assume that each drum is... more
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07/14/22

Solving this System of Equations
These are the equations:10y+7x=29 −5y−9x=2​The question is asking me to solve the system of questions to find X & Y. I just cannot understand how to solve these. Please help! Thank you!
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07/13/22

What is the probability a car's brakes are good given that the mechanic says its brakes are good?

Suppose that of all used cars of a particular year, make, and model, 50% have bad brakes. You are considering buying a used car of this year, make, and model. You take the car to a mechanic to have... more
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07/12/22

Suppose that we have a random sample X1, ..., Xn from a Bernoulli(p) distribution. What is the maximum likelihood estimator (MLE) of p?
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07/11/22

Find the alpha level and the critical region.
I think I understand it however I just want to be certain.GRE scores are on a 130–170 μ = 140 σ = 15n =100, students who took a GRE course to improve their test scores. after the course the average... more
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07/03/22

Uniform Distribution
The lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0 min. If one such class is randomly selected, find the probability that the class length is... more
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06/29/22

Word problem involving the maximum or minimum of a quadratic function
A vehicle factory manufactures cars. The unit cost C (the cost in dollars to make each car) depends on the number of cars made. If x cars are made, then the unit cost is given by the function How... more
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06/22/22

Write a recursive formula for the sequence. 
Write a recursive formula for the sequence. -9, 21, 51, 81, 111, ...Write an explicit formula for the following sequence. -29, -25, -21, -17, -13, ...
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06/16/22

Joint Distribution of Ranndom Variables
Suppose the joint distribution of random variables X and Y is given as:Part a)Determine the marginal distribution of X. Give your answer as a Python list named pX, where the first, second, and... more
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06/16/22

math I need help please
For a standard normal curve find the z-value with 1010% of the data to the right of it. Round your answer to two decimal places.
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09/09/21

help with homework
A sample of n = 12 scores has ∑X = 72. What is the sample mean?
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04/12/21

In right triangle, sin(0) = 0.731 Find cos(0) to the nearest thousandth
A) 0.466B) 0.999C) 0.682D) 46.970
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04/12/21

NEED HELP! CAN YOU EXPLAIN TO ME WHAT I AM SUPPOSE TO DO OR HOW TO SOLVE THIS QUESTION.

 Kendra is making her homemade muffin recipe. She uses a certain amount of flour to produce the number of muffins shown in the table. Which ratio is equivalent to the number of cups of flour to the... more
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