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 :
8/30 or 4/15 or 26%
8 of the 30 seats are in the front row
Answer:
c
Step-by-step explanation:
<span>2yz + 8
2*1*4+8
8+8
16......</span>
Answer:
20
Step-by-step explanation:
2 x k = 40
2 x 20 = 40
k = 20
check- 40= 20x2
mark as brainliest