58 results.
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Question in Ugur's workspace
A,B 2×2 matrices. Find eigenvalues and eigenvectors of both. Hence or otherwise, find Bn for largish n.
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Question in Content created by Newcastle University
Rolling a pair of dice. Find probability that at least one die shows a given number.
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Question in Content created by Newcastle University
Putting a pair of linear equations into matrix notation and then solving by finding the inverse of the coefficient matrix.
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Question in Christian's workspace
An experiment is performed twice, each with 5 outcomes
xi,yi,i=1,…5 . Find mean and s.d. of their differences yi−xi,i=1,…5.
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Question in Content created by Newcastle University
Given a probability mass function P(X=i) with outcomes i∈{0,1,2,…8}, find the expectation E and P(X>E).
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Question in Content created by Newcastle University
Multiple response question (3 correct out of 6) re properties of convergent and divergent sequences. Selection of questions from a pool.
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Question in Content created by Newcastle University
Multiple response question (4 correct out of 8) covering properties of convergent and divergent sequences and boundedness of sets. Selection of questions from a pool.
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Question in Content created by Newcastle University
Given P(A), P(A∪B), P(Bc) find P(A∩B), P(Ac∩Bc), P(Ac∪Bc) etc..
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Question in Julie's workspace
X∼Binomial(n,p). Find P(X=a), P(X≤b), E[X],Var(X).
rebelmaths
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Question in Content created by Newcastle University
(Green’s theorem). Γ a rectangle, find: ∮Γ(ax2−by)dx+(cy2+px)dy.
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Question in Content created by Newcastle University
Find ∫Γ(x+y)dx+(y−x)dy,Γ is the line from (0,0) to (a,b).
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Question in Content created by Newcastle University
Double integrals (2) with numerical limits
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Question in Content created by Newcastle University
xn=an2+bcn2+d. Find the least integer N such that |xn−ac|<10−r,n≥N, 2≤r≤6. Determine whether the sequence is increasing, decreasing or neither.
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Question in Content created by Newcastle University
Four questions on finding least upper bounds and greatest lower bounds of various sets.
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Question in Content created by Newcastle University
xn=nktn where k is a positive integer and t a real number with 0<t<1. Find the smallest integer N such that (m+1)ktm+1≤mktm for all m≥N.
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Question in Content created by Newcastle University
Arrivals given by exponential distribution, parameter θ and Y, sample mean on inter-arrival times. Find and calculate unbiased estimator for θ.
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Question in Content created by Newcastle University
Given a PDF f(x) on the real line with unknown parameter t and three random observations, find log-likelihood and MLE ˆt for t.
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Question in Content created by Newcastle University
Using a random sample from a population with given mean and variance, find the expectation and variance of three estimators of μ. Unbiased, efficient?
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Question in Content created by Newcastle University
Given sum of sample from a Normal distribution with unknown mean μ and known variance σ2. Find MLE of μ and one of four functions of μ.
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Question in Content created by Newcastle University
Two numbers are drawn at random without replacement from the numbers m to n.
Find the probability that both are odd given their sum is even.
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Question in Content created by Newcastle University
Two ordered data sets, each with 10 numbers. Find the sample standard deviation for each and for their sum.
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Question in Content created by Newcastle University
Given 32 datapoints in a table find their minimum, lower quartile, median, upper quartile, and maximum.
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Question in Content created by Newcastle University
Two ordered data sets, each with 10 numbers. Find the sample standard deviation for each and for their sum.
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Question in Content created by Newcastle University
The random variable X has a PDF which involves a parameter c. Find the value of c. Find the distribution function FX(x) and P(a<X<b).
Also find the expectation E[X]=∫∞−∞xfX(x)dx.
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Question in Content created by Newcastle University
Very elementary matrix multiplication.
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Question in Content created by Newcastle University
Multiplication of 2×2 matrices.
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Question in Content created by Newcastle University
Find the determinant and inverse of three 2×2 invertible matrices.
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Question in Content created by Newcastle University
Sample of size 24 is given in a table. Find sample mean, sample standard deviation, sample median and the interquartile range.
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Question in Content created by Newcastle University
A box contains n balls, m of these are red the rest white.
r are drawn without replacement.
What is the probability that at least one of the r is red?
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Question in Content created by Newcastle University
A,B 2×2 matrices. Find eigenvalues and eigenvectors of both. Hence or otherwise, find Bn for largish n.