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The table shows the time some people spent mowing their lawn.
Time (t) in minutes
0 10 < t < 20
20 < t < 40
40 < t < 60
Frequency
5
12
17
6
Work out an estimate for the mean time the people spent mowing their lawns.

The table shows the time some people spent mowing their lawn Time t in minutes 0 10 lt t lt 20 20 lt t lt 40 40 lt t lt 60 Frequency 5 12 17 6 Work out an estim class=

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