Considering that we have the standard deviation for the sample, the t-distribution should be used to solve this question.
<h3>When should the z-distribution and the t-distribution be used?</h3>
- If we have the standard deviation for the sample, the t-distribution should be used.
- If we have the standard deviation for the population, the z-distribution should be used.
In this problem, there is a sample standard deviation of 0.5 hours, hence the t-distribution should be used.
More can be learned about the t-distribution at brainly.com/question/13873630
Answer: -1
Step-by-step explanation:
1 - (-3) - 5 = 1 + 3 - 5
Thats because subtracting by a negative number is the same as adding the negative number's absolute value (Distance away from zero).
(1 + 3) - 5 = -1
PEMDAS Addition and Subtraction from left to right.
Answer: $20.01
$20.99
$20
$80
$1,000
Step-by-step explanation:
The reason why is because they are $20 or more. if it was $19.99 then no.
Answer:
B. 9 Units squared
Step-by-step explanation:
Edge 2021
Answer:
P = 17t + 7
Step-by-step explanation:
P = 2L + 2w
L = 1.5t + 5
w = 7t - 1.5
P = 2*(1.5t + 5) + 2*(7t - 1.5)
P = 3t + 10 + 14t - 3
P = 17t + 7