Answer:
29.5+/-1.11
= ( 28.39, 30.61)
Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
x+/-zr/√n
Given that;
Mean x = 29.5
Standard deviation r = 5.2
Number of samples n = 59
Confidence interval = 90%
z-value (at 90% confidence) = 1.645
Substituting the values we have;
29.5+/-1.645(5.2/√59)
29.5+/-1.645(0.676982337100)
29.5+/-1.113635944529
29.5+/-1.11
= ( 28.39, 30.61)
Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)
Answer: No
Step-by-step explanation:
Given: The San Diego Safari Park charges $18 for parking, and an admission fee of $56.
This can be represented by the equation c = 56p + 18, where c is the total cost and p is the number of people.
Equation of direct proportion: 
But here we have a y-intercept as 18.
So, we cannot say there is a proportional relation ship between c and p.
Hi. 45 minutes out of 60 min is 3/4 of an hour. multiply 3/4 by 14 and you have 10 1/2 hours. 28 hrs - 10 1/2 is 17 1/2 hours. multiply by 60 and you have:
1050 min.
C, 62
Line segment SQ=180, because it is a straight line
90+28=118
180-118=62
hope this helps:)
The x-value of the vertex of the given parabola is x = 5, so the correct option is b.
<h3>
How to get the x-value of the vertex?</h3>
If we define the parabola by f(x), by looking at the table, we can read:
So, notice that:
f(2) = f(8).
Then the x-coordinate of the vertex is the midpoint between 2 and 8.
x = (2 + 8)/2 = 5
The x-value of the vertex of the given parabola is x = 5, so the correct option is b.
If you want to learn more about parabolas:
brainly.com/question/4061870
#SPJ1
