Answer: The answer is 
Step-by-step explanation: We are to find the equation of the parabola with x-intercepts (-2,0), (1.2,0) and y-intercept (0,-4).
Therefore, axis of symmetry is
Let the equation of the parabola be 
Substituting the points (x,y)=(0,-4) and (1.2,0) in the above equation, we find that
and
Solving the above two equations, we get
So, putting the values of 'a' and 'k' in the equation of the parabola, we get
Thus, the equation of the parabola is
Answer:
95% confidence interval will be narrower.
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 50
95% confidence interval for average alcohol content:
a) 90% confidence interval
- If we calculate a 90% confidence interval, then the confidence interval become narrower because we decreased the confidence percentage.
- This would decrease the margin of error.
- Hence, the confidence interval become narrower.
Answer:
A
Step-by-step explanation:
h determines how much d she will get and hence B and D are wrong
independent variable means the cause
dependent variable means the effect
Answer:
Step-by-step explanation:
