The histogram represents the waiting times, in minutes, of 68 customers. State the class interval wi

Question

The histogram represents the waiting times, in minutes, of 68 customers. State the class interval with the greatest frequency density. Calculate the frequency in the interval $15<t\le20$. Find the probability that a randomly selected customer waited more than 20 minutes.

Accepted Answer

(a) $0<t\le5$; (b) $18$; (c) $\frac{4}{17}$.

Sec 3/4 E Math Mock 1-Q23 - Mock Paper 1: Interpreting a histogram with unequal class widths

Sec 3/4 E Math Mock 1-Q23 - Mock Paper 1: Interpreting a histogram with unequal class widths

Solution:

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