The proof that the area of the trapezium is 2x² + x -351 = 0 can be seen in the image attached below.
<h3>What is a trapezium?</h3>A trapezium is a quadrilateral that has a pair of opposite parallel sides.
From the given diagram:
The area of the trapezium can be computed as;
351 = 2x² + x
2x² +x - 351 = 0 : Proved
Learn more about the area of trapezium here:
brainly.com/question/16904048
Answer:
0.000005178
Step-by-step explanation:
we test for the goodness of fit
h0; drink preferences not changed
h1: drink preferences changed
alpha = 0.05
we solve for the test statistics
the chsquare test was performed in the attachment
Chi square = (O-E)²/E
chisquare = 32.30188
degree of freedom = n -1 = 6-1 = 5
using the chi distribution function on excel i calculated the p value
CHIDIST(32.30188, 5) =
P-value = 0.000005178
pvalue is less than 0.05 so we reject null hypothesis and conclude that there is sufficient evidence that drink preferences are changed.
the chisquare calculation is in the attachment. Thank you!
