An English literature course was taken by 250 students. Each member of a random sample of 50 of these students was asked to estimate the amount of time he or she spent on the previous week’s assignment. Suppose that the population standard deviation is 30 minutes. a. What is the probability that the sample mean exceeds the population mean by more than 2.5 minutes? b. What is the probability that the sample mean is more than 5 minutes below the population mean? c. What is the probability that the sample mean differs from the population mean by more than 10 minutes?
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.
An English literature course was taken by 250 students. Each member of a random sample of 50 of these students was asked to estimate the amount of time he or she spent on the previous week’s assignment. Suppose that the population standard deviation is 30 minutes.
a. What is the
b. What is the probability that the sample mean is more than 5 minutes below the population mean?
c. What is the probability that the sample mean differs from the population mean by more than 10 minutes?
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