Answer:
D
Step-by-step explanation:
Given
← cancel the factor (x - 4) on the numerator and denominator
= → D
Make your own of the following v
1 answer:
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Answer:
d. Water Source Well City Water Stream Expected Count 45.33 45.33 45.33
Step-by-step explanation:
Hello!
The objective of this study is to test whether the horses are equally likely to get water from one of three sources (Well, City or Stream), i.e. that the water sources have the same probability of being used.
The study variable is categorical:
X: Origin of the drinking water of the horses, categorized: Well "W", City "C" and Stream "S"
And one study population:
"Horses"
If the study hypothesis is that the three water sources are equally to be selected, you can symbolize it as P(W)=P(C)=P(S)=1/3
You want to test if the observed distribution follows an expected distribution, the test to use is a Chi-Square Goodness of Fit Test.
The hypothesis is:
H₀: P(W)=P(C)=P(S)=1/3
Under the null hypothesis, the formula to calculate the expected frequencies is:
Where:
is the expected value of the i-category.
is the probability for the i-category under the null hypothesis.
n= sample size.
Observed frequencies:
Well: 62
City: 43
Stream: 31
Total: 136
Expected frequencies:
Typ, if the expected frequencies are correctly calculated, the sum of them must give the total of the sample (although depending on the type of approximation it can vary in one or two decimals)
45.33 * 3= 135.99 ≅ 136
I hope it helps!
<u>Given</u>:
An Exhibitor is selling decorative wreaths at an arts and craft show.
The net profit P in dollars from the sales of the Wreaths is given by , where N is the number of wreaths sold.
We need to determine the number of wreaths sold to earn a net profit of $100.
<u>Number of wreaths sold:</u>
The number of wreaths sold to earn a profit of $100 can be determined by substituting P(n) = 100 in the equation , we get;
Thus, the number of wreaths sold is 200.
Answer:
The correct option is;
Yes, the line should be perpendicular to one of the rectangular faces
Step-by-step explanation:
The given information are;
A triangular prism lying on a rectangular base and a line drawn along the slant height
A perpendicular bisector should therefore be perpendicular with reference to the base of the triangular prism such that the cross section will be congruent to the triangular faces
Therefore Marco is correct and the correct option is yes, the line should be perpendicular to one of the rectangular faces (the face the prism is lying on).
