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 :
Multiply 2x by each term in the parentheses:
2x(x - 3)
2x^2 - 6x
Answer:
2x^2 - 6x
The answer is 301000070409
C. 6
Exploration: i got it right.
the shorter sides are 4 inches and the longer sides are 21 inches long