The option that describes the relationship between the two confidence intervals is; The width of I₈₁ will be¹/₉ the width of I₉
<h3>How to calculate width of the confidence interval with normal distribution?</h3>
The width of the confidence interval will be calculated from the formula;
W = 2Z(σ/√n)
where;
z is the z-score at given confidence level
σ is standard deviation
n is sample size
For first sample;
W_i9 = 2Z(σ/√9)
W_i9 = ²/₃Zσ
For second Sample;
W_i81 = 2Z(σ/√81)
W_i81 = ²/₉Zσ
Thus, we will have;
W_i9/W_i81 = (²/₃Zσ)/(²/₉Zσ)
W_i9/W_i81 = 9
W_i81 = ¹/₉W_i9
Read more about width of confidence interval at; brainly.com/question/15934877
Parallelograms are shapes that have 4 sides, where the opposite sides are congruent and parallel
<h3>How to determine a parallelogram</h3>
For a shape to be a parallelogram, then the following must be true
- The opposite side lengths are congruent
- The opposite side lengths are parallel
- The diagonals bisect each other
<h3>The proof statement</h3>
The above statements in (a) above mean that:
The statements that prove that quadrilateral uwxy is a parallelogram are
- Diagonals UX and WY bisect each other
- Sides UW and XY are congruent
- Sides UW and XY are parallel.
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Read more about parallelograms at:
brainly.com/question/3050890
Answer:
1. A 2. A 3. B
Explanation:
Took the quiz on edge 2022
