I would EXPECT 100 on the average, but I would expect the actual number to be within sthree standard deviations of that.
The students arror is understanding what expected value is versus samples.
In a table of random digits, each digit is to occur with a probability of 0.1.
a) A student examines a list of 200 random digits and counts only eleven 4’s and thus claims that the table is not really random. Explain the error in the student’s thinking.
b) How many 7’s would you expect to find in a random digit table consisting of 1000 digits?
part A is think is that they assumed that if it was random then the numbers woud be distributed evenly.
part b is 100?
1 answer
1 answer