Transcript Blockbusters

Blockbusters
• The aim for blue team is to get from one side to the other.
• The aim for white team is to get from the bottom to the
top.
• Either team may answer the question.
• The team to answer the question correctly will then pick
another.
P
F
V
L
B
Q
G
W
M
C
R
H
X
N
D
S
I
J
WIN
Y
O
E
Restart
U
K
A
T
WIN
Question A
Explain briefly what you understand by
a) A statistical model.
b) A sampling frame.
c) A sampling unit.
Question B
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Question C
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Question D
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Question E
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Question F
The probability that a man is over 1.8m tall is 0.2.
A random sample of 50 men is taken and each
man is measured and his height recorded.
a) Find the probability that the number of men in
the sample over 1.8m tall is between 7 and 10
(inclusive) using
i. A Poisson approximation.
ii. A normal approximation.
b) By finding the actual value of the probability
state which is the better approximation
Question G
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Question H
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Question I
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Question J
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Question K
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Question L
Balloons are packed at random and sold in packets
containing 20 balloons. The company manufacturing the
balloons produce 45% blue ones and the remainder are
red ones.
A packet is selected at random from the production line.
a) Write down two reasons to support the use of the
binomial distribution to model the number of blue
balloons in a packet.
b) Calculate the probability that this packet contains
exactly 7 blue balloons.
c) Calculate the probability that this packet contains more
blue balloons than red balloons.
Question M
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Question N
An experiment involving two fair dice is carried out 180
times. The dice are placed in a container, shaken and the
number of times a double six is obtained are recorded.
Find the probability that the number of times a double six
is obtained is
a) once.
b) Twice.
c) At least three.
Question O
Question P
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Question Q
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Question R
Question S
Explain the difference between a one-tailed hypothesis and
a two-tailed hypothesis test.
How does this effect how you carry out the test.
Question T
a) Describe what is meant by the expression “a statistical
hypothesis”.
b) Describe the difference between the null hypothesis and
the alternative hypothesis.
c) What symbols do we use to denote the null hypothesis
and alternative hypothesis.
Question U
I tossed a coin 20 times and obtained a head on 6
occasions. Is there evidence that the coin is biased. Use a
5% two-tailed test.
Question V
A bag contains a large number of coins of which 75% are
10p coins and 25% are 5p coins.
A sample of 3 coins is drawn from the bag.
Find the sampling distribution for the median of the values
of the 3 selected coins.
Question W
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Question X
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Question Y
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Blue Team
are the
Winners!!!
Thank You For Playing
BlockBusters
Play Again Soon
White Team
are the
Winners!!!
Thank You For Playing
BlockBusters
Play Again Soon