I would like some assistance with the following probability questions

Frequency distribution and data analysis 1. Complete the table below Class Frequency Q x9111- Relative Frequency (94;) Boundaries Q L1 L2 L12 L2 roundup to a whole number 33 37.9 1 38 42.9 5 43 47.9 10 48 52.9 9 53 57.9 4 58 62.9 2 Total a) class width b) Compute the sample mean. Use the formula. {Lound your answer to two decimal places) Extfr x: 2ft c) Computer the sample standard deviation. Variance = Standard deviation = d) Construct a frequency histogram.