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Edexcel as level chapter 7 hypothesis testing powerpoint
Powerpoint presentation of key definitions and explanations of the chapter 7 hypothesis testing
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Statisticsypothesis Testing
Twitter: @Owen134866
www.mathsfreeresourcelibrary.com
, Prior Knowledge Check
1) . Calculate: 2) Wanda rolls a fair dice
eight times.
a) b)
0.075 0.117 a) Suggest a suitable model
for the random variable ,
c) d) the number of times the
0.0036 0.00000504 dice lands on 5
1
( )
𝑋 𝐵 8,
6
b) Calculate:
i) ii)
0.260 0.0307
,Teachings for
Exercise 7A
, Hypothesis Testing
Hypothesis
A Hypothesis is a statement made A hypothesis is a statement made about a population
about the value of a population parameter
parameter. You can test a
hypothesis to see if there is
enough evidence to change it Null Hypothesis
The ‘default’ position which we usually initially assume
This chapter is all about testing to be true
For rolling a dice and getting a 6, then
statistically whether statements are
true or not
Alternative Hypothesis
There are several key terms you This hypothesis tells us about the parameter/situation
if our null hypothesis turns out to be incorrect
need to know…
For rolling a dice and getting a 6, then
Population parameter
A population parameter is a statistical Test statistic
measure relating to a population A test statistic is the result of the experiment we
For example, the mean is a population are using, which we use to test
parameter If we tossed a coin 4 times and got 3 heads then
that value/proportion is the test statistic
7A
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