Mathematics, 28.05.2021 14:00 aliceohern

The table shows some information about the lifetimes, t, in hours, of some lightbulbs. Lifetime Frequency
25 < t ≤ 50 76
50 < t ≤ 100 33
100 < t≤ 150 67
150 < t ≤ 200 28
200 < t ≤ 250 0
250 < t ≤ 300 82
300 < t≤ 350 36

Estimate the mean lifetime of a bulb.
Give your answer rounded to 2 DP.
Plz i need help with this answer quick plzzz

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The table shows some information about the lifetimes, t, in hours, of some lightbulbs. Lifetime Fre...