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Author Question: A consumer product magazine recently ran a story concerning the increasing prices of digital ... (Read 91 times)

appyboo

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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?
◦ H0: μ = 215 vs. HA: μ ≠ 215
◦ H0: μ = 215 vs. HA: μ < 215
◦ H0: μ ≥ 215 vs. HA: μ < 215
◦ H0: μ = 215 vs. HA: μ > 215


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Marked as best answer by appyboo on Feb 14, 2020

leahchrapun

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appyboo

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Reply 2 on: Feb 14, 2020
YES! Correct, THANKS for helping me on my review


meow1234

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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