A random sample of 100 students was taken and their final exam mark was recorded in the following frequency table. Mark

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A random sample of 100 students was taken and their final exam mark was recorded in the following frequency table. Mark

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A Random Sample Of 100 Students Was Taken And Their Final Exam Mark Was Recorded In The Following Frequency Table Mark 1
A Random Sample Of 100 Students Was Taken And Their Final Exam Mark Was Recorded In The Following Frequency Table Mark 1 (40.42 KiB) Viewed 34 times
A random sample of 100 students was taken and their final exam mark was recorded in the following frequency table. Mark [0,20) [20,40) [40, 60) [60, 80) [80, 100) Freq 10 28 23 30 9 100 a b. Compute the mean of this frequency distribution Can we conclude that the data comes from a normally distributed population a standard deviation of 20? Use a = 0.05.
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