How do you apply your knowledge about correlation and causation to real life?
1 answer:
Answer:
Both positive correlations and negative correlations (when one variable increases as the other decreases) can be found everywhere you look. For example, when you spend more time in sunlight, your chances of getting a sunburn also go up. More examples of positive correlations include:
The more time you spend running on a treadmill, the more calories you will burn.
The longer your hair grows, the more shampoo you will need.
Step-by-step explanation:
21,23,23,27,29,29,33,33,34,36,37,38,39,40,41,43,44,45,56,56
The minimum is the lowest number in the data set. Since it is listed from smallest to largest, we know that the minimum is 21. The median is the middle number. Cancel out 9 numbers from each side and add the two numbers 36+37 then divide the answer by 2 to get the median.Therefore, the median is 36.5
The maximum is the highest number in the data set; it is 56.
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Answer:
The upper limit of a 95% confidence interval for the population mean would equal 83.805.
Step-by-step explanation:
The standard deviation is the square root of the variance. Since the variance is 25, the sample's standard deviation is 5.
We have the sample standard deviation, not the population, so we use the t-distribution to solve this question.
T interval:
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 15 - 1 = 14
Now, we have to find a value of T, which is found looking at the t table, with 14 degrees of freedom(y-axis) and a confidence level of 0.95(). So we have T = 1.761
The margin of error is:
M = T*s = 1.761*5 = 8.805.
The upper end of the interval is the sample mean added to M. So it is 75 + 8.805 = 83.805.
The upper limit of a 95% confidence interval for the population mean would equal 83.805.