Do the following activity: find the probability of a randomly selected student of your class wearing spectacles, and decide a sample space to find P(getting an even number).

Question

Do the following activity - Activity I : Total number of students in your class, n(S) = [ ] Number of students from your class, wearing spectacles, n(A) = [ ] Probability of a randomly selected student wearing spectacles, P(A) = [ ] Probability of a randomly selected student not wearing spectacles, P(B) = [ ] Activity II : Decide the sample space yourself and fill in the following boxes. [Figure: a flow chart. Left side: box 'Sample space' → S = { } → n(S) = [ ]. Right side: box 'The condition for event A is getting an even number' → A = { } → n(A) = [ ]. Below: ∴ P(A) = [ ]/[ ] = [ ].]

Doubtly AI · Answer

Answer: The numbers depend on your own class and the experiment you choose. A model response is given below. Activity I (example: a class of 40 students, of whom 12 wear spectacles) Total number of students in the class, n(S) = 40 Number of students wearing spectacles, n(A) = 12 P(A) = n(A)/n(S) = 12/40 = 3/10 Students not wearing spectacles: n(B) = 40 - 12 = 28, so P(B) = 28/40 = 7/10 Check: P(A) + P(B) = 3/10 + 7/10 = 1 ✓ (a student either wears spectacles or does not). Activity II (example: a die is rolled once) Sample space: S = \1, 2, 3, 4, 5, 6\, so n(S) = 6 Event A: getting an even number, A = \2, 4, 6\, so n(A) = 3 therefore P(A) = n(A)/n(S) = 3/6 = 1/2 For a die rolled once, P(getting an even number) = 1/2.

Do the following activity: find the probability of a randomly selected student of your class wearing spectacles, and decide a sample space to find P(getting an even number).

1 answer

Your answer