A normal distribution approximation could be used for your calculation in Q3. Determine the mean and standard deviation of the normal distribution, and then perform the calculation from Q3 on Excel, using this normal distribution (continuity correction is not required). Is your answer close to the exact probability from Q3?
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.
Question 4 below.
A university lecture theatre has 200 seats with folding arm tablets, 30 of which are designed for left-handers. A class of 180 students meets there.
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(For reference only) If 13% of the general student population is left-handed, what is the expected number of right- handed students in this class?
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(For reference only) State the distribution of X = the number of right-handed students in the class, and any necessary parameters. Indicate any assumptions you are making in nominating this distribution for X.
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(For reference only) Use Excel to find the exact
probability that a right-handed student is forced to use a left-handed tablet due to lack of seating (i.e. X > 170). Show screen details. -
A
normal distribution approximation could be used for your calculation in Q3. Determine the mean and standard deviation of the normal distribution, and then perform the calculation from Q3 on Excel, using this normal distribution (continuity correction is not required). Is your answer close to the exact probability from Q3?
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