A repeatable observation with an unpredictable result is a:
ASolved proof
BRandom trial
CFixed answer
DKnown result
Answer & Solution
Correct answer: B. Random trial
1. Tossing a coin can be repeated any number of times.
2. The result may differ every time.
3. Such an observation is a random experiment or trial.
4. So the answer is a random trial.
_Source: NCERT Class 9 Mathematics, Ch 7 'The Mathematics of Maybe: Introduction to Probability'_
Related questions
Uppercase letters such as A and B are used in probability notation to represent:An experiment is repeated far more often, and the observed proportion moves toward the theDrawing one card from a full deck, the probability it is a spade is 13 out of:Drawing two cards from a 52-card deck without replacement, the denominator for the second If the name is kept out instead, each member of the population can be chosen:A name is drawn from a hat and then put back before the next draw. That sampling is done:A sample space can be shown by listing outcomes, by a Venn diagram or by a:For independent events that conditional term simplifies, so the chance of both is found by