Answer:
Step-by-step explanation:
Null and alternative hypothesis :
Test statistic,
Test statistic
value
value by the p- table
Significance level
value
We reject
The rope is 3 yards.
1 yard = 3 feet, so 9 ÷ 3 = 3 yards.
Answer:
D. This scenario should be analysed using paired data because the groups are dependent and have a natural pairing.
Step-by-step explanation:
Paired Data can be defined as data set, when sample units of one data set are related to sample units in other data set.
Research Study about spouses number of hours of sleep each night is paired data. As, each man in the male sample group is related to a corresponding woman (his wife) in the female sample group. So, they have a natural paring & they, their sleep schedules are dependent on each other.