Answer:
correct answer = 90%
Step-by-step explanation:
Let x be the percent of the question did she answer correctly.
Given:
An engineering student answered 81 questions correctly on a 90 question test.
Find the percent of the question did she answer correctly.
Solution:
Percentage formula is given below
% answer 
% answer 
% answer 
% answer 
% answer 
% answer 
correct answer = 90%
Therefore, she answered 90% correctly.
Given:
Sample size, n = 40
Sample mean, xb = $6.88
Population std. deviation, σ = $1.92 (known)
Confidence interval = 90%
Assume normal distribution for the population.
The confidence interval is
(xb + 1.645*(σ/√n), xb - 1.645*(σ/√n)
= (6.88 + (1.645*1.92)/√40, 6.88 - (1.645*1.92)/√40)
= (7.38, 6.38)
Answer: The 90% confidence interval is (7.38, 6.38)
The maximum height of the pie based on the information given is 124.
<h3>How to depict the height?</h3>
From the information given in the table, it can be seen that the time and the height of the pie was given in the table.
In this case, the maximum height of the pie based on the information given is 124. This can be seen at 4 seconds.
Learn more about height on:
brainly.com/question/983412
#SPJ1
Answer:
Definitions, postulates, and theorems.
Step-by-step explanation:
- Definition: This is a statement that describe the meanings of the terms being used.
- Postulate: This is a statement that is assumed true without proof. It is a statement that is taken to be "clearly true".
- Theorem: This is a statement that is never assumed to be true until it is proven so. It depends strongly on proofs.
