9514 1404 393
Answer:
21
Step-by-step explanation:
The number who bought expensive tickets is 3/5 of the number who bought cheap tickets.
(3/5)(35) = 21
21 people bought the more expensive ticket.
Answer:
For this case we want to test if life expectancy in country 1 is more than 10 years lower than in country 2, (alternatibe hypothesis), so then the system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
Or equivalently:
Null hypothesis:
Alternative hypothesis:
Step-by-step explanation:
Previous concepts
A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".
The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".
The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".
Solution to the problem
For this case we want to test if life expectancy in country 1 is more than 10 years lower than in country 2, (alternatibe hypothesis), so then the system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
Or equivalently:
Null hypothesis:
Alternative hypothesis:
Answer: B
Step-by-step explanation:
“There is likely an association between the categorical variables because the relative frequencies are not similar in values”
Answer:
The length of GH is 2 inches
Step-by-step explanation:
The given parameters are;
Parallelogram ABCD ~ Parallelogram EFGH
Segment BC of parallelogram ABCD corresponds to segment FG of parallelogram EFGH
Similarly
Segment CD of parallelogram ABCD corresponds to segment GH of parallelogram EFGH
In parallelogram ABCD, we have;
Segment BC = 21 in.
Segment CD = 6 in.
In parallelogram ABCD, we have;
Segment FG = 7 in.
Given that parallelogram ABCD is similar to parallelogram EFGH, we have;
Which by substitution, gives;
= 2 inches
To find this:
15/100*20 =
3/20*30 =
3