Question 1
Researchers have claimed that the average number of headaches per student during a semester of Statistics is 10. Statistics students believe the average is higher. In a sample of
n = 24 students the mean is 15 headaches with a deviation of 2. Which of the following represent the null and alternative hypotheses necessary to test the students' belief?
◦
H0:
μ = 10 vs.
Ha:
μ ≠ 10
◦
H0:
μ = 10 vs.
Ha:
μ > 10
◦
H0:
μ < 10 vs.
Ha:
μ = 10
◦
H0:
μ = 10 vs.
Ha:
μ < 10
Question 2
A consumer product magazine recently ran a story concerning the increasing prices of digital cameras. The story stated that digital camera prices dipped a couple of years ago, but are now beginning to increase in price because of added features. According to the story, the average price of all digital cameras a couple of years ago was $215.00. A random sample of cameras was recently taken and entered into a spreadsheet. It was desired to test to determine if that average price of all digital cameras is now more than $215.00. What null and alternative hypothesis should be tested?
◦ H
0: μ = 215 vs. H
A: μ ≠ 215
◦ H
0: μ = 215 vs. H
A: μ < 215
◦ H
0: μ ≥ 215 vs. H
A: μ < 215
◦ H
0: μ = 215 vs. H
A: μ > 215
The digital image of a fetus shows a well-developed head and a comparatively smaller body. At 7 ...
How to know when a function is increasing or decreasing using calculus (Part 1)
Use the product rule to find derivative
Use the product rule to find derivative
To find the derivative use product rule
Find the two integers that have a sum of 20 and a maximum product