Answer:
54x^5-42x^6-18x^5-9x^6+7x^5+3x^4
61x^5-51x^6-18x^5+3x^4
-51x^6+43x^5+3x^4
218they are the annnns erv
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)
Answer:
displacement = 75 km
Step-by-step explanation:
the distance from final to initial point gives the displacement
displacement = 120 - 45