How to factor the tens from 30x40
2 answers:
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Answer:
Step-by-step explanation:
- A null hypothesis is a hypothesis where a researcher generally try to disprove, it says that there is no statistically significant relationship between the two variables .
- An alternative hypothesis says that there is a statistical significance between two variables.
Claim 1. : Mean age of online dating service users is 40 years.
i.e. , since it has equals sign so we take this as null hypothesis.
Claim 2. : Mean age of online dating service users is not 40 years.
⇒ Null Hypothesis :
Alternative hypothesis :
Answer:
<em>680</em>
Step-by-step explanation:
Given that:
All the pupils at a primary school come from one of three villages: Elmswell, Haughley or Woolpit.
of the pupils come from Elmswell
of the pupils come from Haughley
102 pupils come from Woolpit.
To find:
Total number of pupils in the school.
Solution:
Let total number of pupils =
So, number of pupils that come from Elmswell = of 100x
OR
And, number of pupils that come from Haughley= of 100x
OR
Number of pupils that come from Woolpit =
As per given statement:
Number of pupils from Elmswell = 25x = 25 6.8 = 170
Number of pupils from Haughley = 60x = 60 6.8 = 408
Total number of pupils at the school =