Ethernet's hierarchical topology tends to create ________

If a person visits a coffee shop for buying coffee, the size of the coffee cup he buys is a function of the time of the day he makes the purchase. In this case, the null hypothesis can be stated as:

a. the person buying the coffee is independent of the size of the coffee cup. b. the size of the coffee cup purchased does not depend on the time when the purchase is made. c. the size of the coffee cup purchased depends on the time when the purchase is made d. the earlier in the day the purchase is made, the bigger the size of the coffee cup purchased. e. the size of the coffee cup is dependent on the person buying the coffee.

Treatment of missing responses poses problems, particularly if the proportion of missing responses is more than 10 percent

Indicate whether the statement is true or false