7. The table shows the height (m) of 30 selecteal trees in a forest. a) Find the nean height of the trues b) Calculate comrect to one derimal place, the: i. median ii. mean deriation 8. Two towns \( B \) and \( F \) on the equater are on longitude \( 67^{\circ} \equiv \) and \( 123^{\circ} \mathrm{E} \) respectively. ii) Illustrate the information in a diagram (ii) Find the distance between B and \( F \) along the equator. (iii) How far is \( B \) from the north pole. Take \( R=6400 k_{n} \) \( j=22 / 7 \) 9. A compeniy bid for two contracts \( T \) and \( J \). The probabilities that it will win contract \( T \) and \( J \) are \( 1 / 5 \) and \( 13 / 8 \) respectivecty. Find the probability that the company wins: i) buth contracts (ii) only one contract.
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The table shows the heights and the number of trees for each height: \[ \begin{array}{ccccccc} \text{Height (m)} & 9 & 10 & 11 & 12 & 13 & 14 \\ \text{Number of trees} & 5 & 4 & 6 & 5 & 6 & 4 \\ \end{array} \] First, find the total height of all Show more…
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