210 results in Content created by Newcastle University - search across all projects.
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Double integrals (2) with numerical limits
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Intersection points, tangent vectors, angles between pairs of curves, given in parametric form.
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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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Deciding whether or not three sampling methods are simple random sampling, stratified sampling, systematic or judgemental sampling.
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Four questions on finding least upper bounds and greatest lower bounds of various sets.
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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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Given mean and sd of 1000 sample returns on a scale of 1 to 7 together with a given score, find the z-score.
Also find the 95% confidence interval for the population mean.
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A graphical approach to aiding students in writing down a formal proof of discontinuity of a function at a given point.
Uses JSXgraph to sketch the graphs and involves some interaction/experimentation by students in finding appropriate intervals.
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Exam (1 question)
Solve a system of linear equations using Gaussian elimination.
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For a sample of size n from a normal distribution and given the mean of the sample and the standard deviation of the distribution, find the MLE for the mean. Also the expected information and a confidence interval for the mean.
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For a sample of size n from a Poisson distribution Poisson(λ) and given the mean of the sample, find the MLE for λ. Also find the expected information and a confidence interval for λ.
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For a sample of size n from an Exponential distribution Exponential(λ) and given the mean of the sample, find the MLE for λ. Also find the expected information and a confidence interval for λ.
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For a sample of size n from a normal distribution, given mean of the sample mean and the standard deviation , find the t-statistic corresponding to a null hypothesis μ=m and a given confidence level. Check if the result is significant at this level.
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Given a linear combination Y of three independent random variables with given means and variances, find the mean of variance of Y.
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Given 3 observations from a Poisson(μ) distribution find the likelihood, the log likelihood and the MLE for μ.
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Looking up t-tables.
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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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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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Enumerate the elements in some sets defined using set builder notation.
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No description given
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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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Asks to determine whether or not 6 statements are propositions or not i.e. we can determine a truth value or not.
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Given descriptions of 3 random variables, decide whether or not each is from a Poisson or Binomial distribution.