A train travels 253 km at an average speed of 92 km/hr then 45 km at an average speed of 10 m/s. Find the average speed for the whole journey in km/hr. Iryana travels for 48 minutes at 75 km/hr then for 1 hour 12 minutes at x km/hr. If she travels a total distance of 126 km, find the value of x.

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A: Please refer the attached image for complete solution.

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.