The answer is the last option, hope this helps lol
Answer:
True
Step-by-step explanation:
The variance of a data set gives you a rough idea of how spread out your data is. A small number for the variance means your data set is tightly clustered together and a large number means the values are more spread apart.
Look carefully at the point where the 2 lines intersect. From that point, look straight down to the x-axis; you'll see that the x-value there is 50. Similarly,
starting at the intersection, look straight left to the y-axis; the y-value there is 11.
Thus, the coordinates of the intersection (i. e., the solution) are found in (50,11).
Answer:
(0.4578 , 0.5318)
Step-by-step explanation:
The attached figure shows the formula for calculating confidence intervals for the difference of proportions in large samples.
Let's call
= proportion of married couples, in the first sample, who had two or more personality preferences in common.
= 197/347 = 0.5677
= size of the first random sample
= proportion of married couples, in the second sample, who had no preferences in common.
= 39/535 = 0.0729
= size of the second random sample = 535
= confidence%.
= 80%
Looking in the normal standard table, we have that = 1.28.
Substituting this values in the formula we have:
Then the confidence interval for p1-p2 is: (0.4578 , 0.5318)
Step-by-step explanation:
Everything is solve by ABi Nandan.....