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These are the Transum resources related to the statement: "Standardization of normal variables (z- values). Inverse normal calculations where mean and standard deviation are unknown".

Here are some exam-style questions on this statement:

- "
*The weights of players in a sports league are normally distributed with a mean of 75.2 kg, (correct to three significant figures). It is known that 75% of the players have weights between 67 kg and 80 kg. The probability that a player weighs less than 67 kg is 0.05.*" ... more - "
*The length, \(X\) minutes , of a certain category of online video is normally distributed with a mean of 28.*" ... more - "
*The length of Costlow's bâtard bread loaves in centimetres is normally distributed with mean \( \mu \). The following table shows probabilities for values of \(L\).*" ... more

Click on a topic below for suggested lesson starters, resources and activities from Transum.

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