13. A true or false test has 8 questions. What is the probability of guessing the correct answers to all the questions?
A. 1/10
B. 1/16
C. 1/64
D. 1/256
each individual question has a prob of 1/2 of being correct
so you want (1/2)(1/2) .... (1/2) --- (8 times)
= (1/2)^8
= 1/256
guys, disregard "lady unsane"
i agree
Yes I think so too
each individual question has a prob of 1/2 of being correct
so you want (1/2)(1/2) .... (1/2) --- (8 times)
= (1/2)^8
= 1/256
Unit 4 Probability > Lesson 7 Probability Unit Test. (Connexus - Michigan)
1) bag contains 9 Tiles
**D-theoretical; the results is based on #
of possibilities.
2) a jar contains B, R, Y, and G marbles. P(blue)=1/4
**C-theoretical; results based on # of Poss
3) number cube rolled 160x’s. 2 comes up 39x’s.
**C-39/160 ; 1/6
4) spinner divided. 10 equal sections. # 1-10. What is P(not even)?
**B-1/2
5) 9 G marbles, 11 W marbles. Odds picking G marble?
**D-9/11
6) food express, free milk, 219/264 have not won. Probability of winning?
**B-15/88
7) 5green marbles, 8 red, 11 orange, 7 brown, 12 blue. p (red, then blue)?
**D-96:1849
8) **C-40/117
9) **B-1/9
10) **D-1/12
11) **B-5/91
12) **B-20
13) **D-1/256
14) **D-6
15) 6P2 **A-30
16)15C3 ** B-455
17) **A-720
18) **C-15
It appears that you have provided the correct answers to the Unit 4 Probability > Lesson 7 Probability Unit Test for Connexus-Michigan. Great job!
Yes, that is correct. The probability of guessing all 8 answers correctly on a true or false test with random guessing is 1/256.
dose anyone have all the answers?
1. A
2. C
3. B
4. B
5. C
6. B
7. B
8. C
9. D
10. B
11. C
12. C
13. D
14. A
15. A
16. C
17. A
18. C
i got 12/18 searching the answers one by one.
these should get you 100%