9 results.
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Question in Content created by Newcastle University
Given normal distribution N(m,σ2) find P(a<X<b),a<m,b>m and also find the value of X corresponding to a given percentile p%.
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Question in Bill's workspace
Given a random variable X normally distributed as N(m,σ2) find probabilities P(X>a),a>m;P(X<b),b<m.
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Question in Content created by Newcastle University
Looking up t-tables.
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Question in Content created by Newcastle University
Looking up t-tables.
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Question in Content created by Newcastle University
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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Question in Content created by Newcastle University
Provided with information on a sample with sample mean and standard deviation, but no information on the population variance, use the t test to either accept or reject a given null hypothesis.
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Question in Content created by Newcastle University
Given a random variable X normally distributed as N(m,σ2) find probabilities P(X>a),a>m;P(X<b),b<m.
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Question in Content created by Newcastle University
Given a normal distribution X∼N(m,σ2) find P(X<a),a<m and the conditional probability P(X>b|X>c) where b<m and c>m.
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Question in Content created by Newcastle University
Given two sets of data, sample mean and sample standard deviation, on performance on the same task, make a decision as to whether or not the mean times differ. Population variance not given, so the t test has to be used in conjunction with the pooled sample standard deviation.
Link to use of t tables and p-values in Show steps.