Answer:
See below and attached
Step-by-step explanation:
Cora ran 3 miles last week and will run 7 miles per week from now on.
Hana ran 9 miles last week and will run 4 miles per week from now on.
The graph is attached
Intersection of the lines is the point when both Cora and Hana run same distance, 17 miles after 2 days
Answer: (A) The fraction of residents opposed to the project was three-sevenths (3/7)
(B) The total number of residents is 2,128.
Step-by-step explanation: If the number of residents in support of the building project is expressed as a fraction of the total number, then the total number can be expressed as 1. That means we should have two fractions, those in support and those not in support and their addition should be equal to 1.
Hence if the total is 1 and 4/7 are in support, the fraction of those opposed (let that be y) can be calculated as
y = 1 - 4/7
y = 7/7 - 4/7
y = (7 - 4)/7
y = 3/7
Also, the number of residents not in support is 912 (which is 3/7 of the total). That means 912 is three out of seven of f the total population. In other words,
3/7 = 912/x
(Where x is the total population)
By cross multiplication we now have
3x = 912 x 7
x = 6384/3
x = 2128
Therefore the total population of residents is 2,128.
Answer:
Step-by-step explanation:
The fractions need a common denominator before you can add them together.
The least common denominator is 15bc.
Answer:
B. The intervals are centered around the sample mean GPA.
D. 95% of the intervals will contain the population mean in the long run.
Step-by-step explanation:
Confidence interval:
Depends on two things: The sample mean and the margin of error.
Lower end: Sample mean - margin of error
Upper end: Sample mean + margin of error
This means that the intervals are centered around the sample mean.
x% level:
x% of the intervals will contain the population mean in the long run.
So the true statements are:
B. The intervals are centered around the sample mean GPA.
D. 95% of the intervals will contain the population mean in the long run.
Answer: parameter: The proportion of registered voters who will vote Yes on the measure.
Sample: The 1000 registered voters who participated in the study.
Statistic: The proportion of the 1000 registered voters that were surveyed who will vote Yes on the measure.
Variable: Yes or No for each registered voter
Population: All registered voters in the US
Data: The list of Yes and No answers that were given by the 1000 participants in the study.
Step-by-step explanation:
Definitions of the given terms:
- Population: Large groups of individuals having similar characteristics as per the researcher's point of view.
- Sample: It is a subset of the population used to represent it.
- Parameter: Measure of particular characteristics in the population.
- Statistic: Measure of particular characteristics in the sample.
- Variable: Characteristics that vary.
- Data: A collected information facts and statistics.
Hence, by using the above definitions, we have
- Parameter: The proportion of registered voters who will vote Yes on the measure.
- Sample: The 1000 registered voters who participated in the study.
- Statistic: The proportion of the 1000 registered voters that were surveyed who will vote Yes on the measure.
- Variable: Yes or No for each registered voter.
- Population: All registered voters in the US.
- Data: The list of Yes and No answers that were given by the 1000 participants in the study.
