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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.

Application of the binomial distribution given probabilities of success of an event.

Finding probabilities using the binomial distribution.

Identify the centre of enlargement and the scale factor in a transformation of an image A to an image B

This question involves matching images of graphings to descriptions of the relationships between variables.

Deicde whether each of the described sets of data is drawn from a discrete or continuous distribution.

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Find a regression equation.

Now includes a graph of the regression line and another interactive graph gives users the opportunity to move the regression line around. Could be used for allowing users to experiment with what they think the line should be and see how this compares with the calculated line.

Basic data structures and maths/stats functionality given.

You can configure the rest.

rebelmaths

angle between two vectors

rebelmaths

Find the mean, median and mode of a list of 10 test scores.

rebelmaths

Find the mean, median and mode of a list of 10 test scores.

Gitt vektorene  $\boldsymbol{A,\;B}$, finn vinkelen mellom dem.

Given a probability mass function $P(X=i)$ with outcomes $i \in \{0,1,2,\ldots 8\}$, find the expectation $E$ and $P(X \gt E)$.

Determine if the following describes a probability mass function.

$P(X=x) = \frac{ax+b}{c},\;\;x \in S=\{n_1,\;n_2,\;n_3,\;n_4\}\subset \mathbb{R}$.