【简答题】______has the highest number of illiterate people.
【单选题】以下哪一种图像格式是Photoshop专用的图像格式?
【单选题】The researches held by Motorola showed that the textually illiterate villagers
A.
were willing to use old machines with little functions.
B.
had to take some lessons to learn the new functions.
C.
could remember the major function of each button.
D.
would avoid reading the hierarchy menus of the machine.
【简答题】I am illiterate about such things.单词illiterate
【单选题】Which of the following scenarios will yield a nonprobability sample?
A.
The subjects of the sample are chosen on the basis of known probability.
B.
Items or individuals are chosen without regard to their probability of occurrence.
C.
Every individual or item from the frame has an equal chance of being selected. Selection may be with replacement or without replacement.
D.
Decide on a sample size, n; divide the frame of N individuals into groups of k individuals where k = N/n; randomly select one individual from the first group; select every kth individual thereafter.
【单选题】If X is a binomial random with n = 8 and p = 0.6, what is the probability that X is less than or equal to 2?