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Deepa
Subject: Maths
, asked on 25/3/18
You can make a biased dice out of a hollow cube by
sticking a small lump of blu-tac inside the cube.
Make a biased dice and use it to estimate the
probability of obtaining a 6 on your dice,
Answer
3
Deepa
Subject: Maths
, asked on 25/3/18
Q. A calculator can be used to generate random digits. Halim generates 100 random digits with his calculator. He lists the results in the following table:
Based on Halim's results, estimate the probability that the calculator produces:
(a) 9,
(b) 2,
(c) a digit that is an odd number,
(d) a digit that is a prime number.
Answer
4
Deepa
Subject: Maths
, asked on 25/3/18
Tony estimates that the probability that there will be An empty Space in the
car park when he arrives at work is
4
5
. His estimate is based on 50
observations. On how many of these 50 days was he unable to find an
empty space in the car park?
Answer
1
Deepa
Subject: Maths
, asked on 25/3/18
A bag contains red, yellow and green balls. One ball is taken at random
from the bag. The probability that it is red or green is 1/2. The probability
that it is yellow or green is 3/4
.
Answer
1
Deepa
Subject: Maths
, asked on 25/3/18
A bag contains 30 coloured balls. Of these, 10 are red, 6 are blue and the
rest are green or yellow.
A ball is taken at random from the bag. The probability that this ball is
yellow is 1/6
.
What is the probability that a ball taken at random from the bag is:
(a) green,
(b) green or yellow,
(c) red or blue,
(d) red, blue or yellow?
Answer
3
Deepa
Subject: Maths
, asked on 25/3/18
Alex can walk to school, cycle to school or go by bus. The probability that
he walks or cycles to school is
3 /4.
(a) If the probability that he cycles is 1/4
, what is the probability that he
walks?
(b) What is the probability that he goes by bus?
(c) What is the probability that he cycles or goes by bus?
Answer
1
Deepa
Subject: Maths
, asked on 25/3/18
He takes a coin at random from his pocket.
What is the probability that it is:
(a) a £1 or a £2 coin,
(b) a 1p or a 2p coin,
(c) a 5p or a 10p coin,
(d) a 1p or a £1 coin?
Answer
1
Deepa
Subject: Maths
, asked on 25/3/18
Q. One of the numbers in the Venn diagram below is chosen at random.
(a) What is the probability that the number is in the set A?
(b) What is the probability that the number is not in the set A?
Answer
2
Deepa
Subject: Maths
, asked on 22/3/18
Joel has 8 white golf balls and 7 orange golf balls in a bag. If he removes an orange golf ball and does not return it to the bag . what is the probability that the next golf ball he randomly picks from the bag will be white ? is it 8/14 then 4/7 , it is correct ?
Answer
1
Deepa
Subject: Maths
, asked on 22/3/18
bernice placed 5 green paper clips , 6 blue paper clips and 9 yellow paper clips in a container . she will reach into the container and pull out one paper clip without looking . what is the probability that the paper clip she chooses will be green ? is 5/20=1/4 . i want to know whether my answer is correct or not.
Answer
1
Deepa
Subject: Maths
, asked on 22/3/18
the table below gives the marks scored by a group of students in a english language test . use the table to answer the question. Score 2 3 4 5 6 7 No.of students 2 4 7 2 3 2 If a student is chosen at random from the group , what is the probability that he /she scored atleast 6 marks ?
Answer
1
Deepa
Subject: Maths
, asked on 22/3/18
the table below gives the marks scored by a group of students in a test . use the table to answer the question. Mark 0 1 2 3 4 5 Frequency 1 2 7 5 4 3 What is the probability of selecting a student from the group that scored or 3 ?
Answer
1
Deepa
Subject: Maths
, asked on 15/3/18
Toss a coin 100 times. Record your results after every 10 tosses. a. Plot a relative frequency graph and estimate the probability of obtaining a head when you toss the coin. (b) Is your answer to (a) close to 1 /2 ? (c) Put all the results for your class together and obtain a new estimate of the probability of obtaining a head. (d) Is your new estimate closer to 1 /2 than the estimate in (a)?
Answer
1
Deepa
Subject: Maths
, asked on 15/3/18
If it rained on 12 days in November last year, estimate the probability that it will rain on 20 November next year.
Answer
1
Deepa
Subject: Maths
, asked on 15/3/18
You can make a biased dice out of a hollow cube by sticking a small lump of blu-tac inside the cube. Make a biased dice and use it to estimate the probability of obtaining a 6 on your dice
Answer
1
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Next
What are you looking for?
sticking a small lump of blu-tac inside the cube.
Make a biased dice and use it to estimate the
probability of obtaining a 6 on your dice,
Based on Halim's results, estimate the probability that the calculator produces:
(a) 9,
(b) 2,
(c) a digit that is an odd number,
(d) a digit that is a prime number.
car park when he arrives at work is. His estimate is based on 50
observations. On how many of these 50 days was he unable to find an
empty space in the car park?
from the bag. The probability that it is red or green is 1/2. The probability
that it is yellow or green is 3/4
.
rest are green or yellow.
A ball is taken at random from the bag. The probability that this ball is
yellow is 1/6
.
What is the probability that a ball taken at random from the bag is:
(a) green,
(b) green or yellow,
(c) red or blue,
(d) red, blue or yellow?
he walks or cycles to school is
3 /4.
(a) If the probability that he cycles is 1/4
, what is the probability that he
walks?
(b) What is the probability that he goes by bus?
(c) What is the probability that he cycles or goes by bus?
What is the probability that it is:
(a) a £1 or a £2 coin,
(b) a 1p or a 2p coin,
(c) a 5p or a 10p coin,
(d) a 1p or a £1 coin?
(a) What is the probability that the number is in the set A?
(b) What is the probability that the number is not in the set A?