HW10 Skeleton

10.1

• 1. hypothesis
• 2. hypothesis testing
• 3. null hypothesis
• 4. alternative hypothesis
• 5. I
• 6. II
• 7. level of significance
• 8. true
• 9. right-tailed, equal vs greater than
• 10. left-tailed, equal vs not equal
• 11. two tailed, equal vs not equal  

18. 1. H0: x=32, H1: x<32

    2. type 1 error would be concluding that they underfill the jars when they don’t

    3. type II would be concluding they don’t underfill the jars when they do

19. 1. H0: σ =0.7 H1: σ<0.7

    2. pressure has been reduced when it hasn’t

    3. condlude that pressure hasn’t been reduced when it has

 

36. 1. H0: u=54 H1: u>54

    2. the mean consumption of popcorn popcorn annually is greater than 54 ounces

    3. a type I errir, 5% chance

37. 1. H0: p=0.028 H1: p>0.028

    2. There isn’t enough evidence to make the conclusion that they’re using 2.8% of students use e-cigs

    3. TYpe II error due to the alternative hypothesis beung true