The following data gives the information on the observed lifetime (in hours) of 225 electronic components: Lifetime (in hours)0 - 1010 - 2020 - 3030 - 4040 - 5050 - 60Number of components113652613728 What is the modal lifetime (in hours, rounded to 2 decimal places) of the components?

In a moderately skewed distribution, if Mean = 12 and Median = 8, then using Empirical relation (Mode = 3 Median - 2 Mean), what is the value of Mode?

If 4y - 5x = 15 is the regression line of y on x and the coefficient of correlation between x and y is 0.75, what is the value of the regression coefficient of x on y (bxy)?