In the UK, some motorist groups want the current speed limit on motorways increased; they argue this would not be dangerous and would enable motorists to reach their destinations more quickly. However, some road-safety groups say speed can be a factor in accidents and believe it would be dangerous to increase the existing speed limit. a. State the null and alternative hypotheses from the perspective of the motorist groups. b. State the null and alternative hypotheses from the perspective of road-safety groups.
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.
In the UK, some motorist groups want the current speed limit on motorways increased; they argue this would not be dangerous and would enable motorists to reach their destinations more quickly. However, some road-safety groups say speed can be a factor in accidents and believe it would be dangerous to increase the existing speed limit.
a. State the null and alternative hypotheses from the perspective of the motorist groups.
b. State the null and alternative hypotheses from the perspective of road-safety groups.
Introduction
The hypothesis is an assumption that is being tested.
a.
From the perspective of the motorist groups,
Let the current speed limit be and the pop. mean speed limit be .
Determining Null Hypothesis
or the avg. speed limit is equal to the current speed limit.
Determining Alternative hypothesis
or the avg. speed limit is more than the current speed limit.
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Solved in 3 steps
