- Ala 8 8 He No You Wish To Test The Following Claim H At A Significance Level Of A 0 10 Ho P1 P2 H P P2 8 Que 1 (46.43 KiB) Viewed 100 times
- Ala 8 8 He No You Wish To Test The Following Claim H At A Significance Level Of A 0 10 Ho P1 P2 H P P2 8 Que 2 (52.51 KiB) Viewed 100 times
- Ala 8 8 He No You Wish To Test The Following Claim H At A Significance Level Of A 0 10 Ho P1 P2 H P P2 8 Que 3 (52 KiB) Viewed 100 times
- Ala 8 8 He No You Wish To Test The Following Claim H At A Significance Level Of A 0 10 Ho P1 P2 H P P2 8 Que 4 (45.36 KiB) Viewed 100 times
- Ala 8 8 He No You Wish To Test The Following Claim H At A Significance Level Of A 0 10 Ho P1 P2 H P P2 8 Que 5 (50.23 KiB) Viewed 100 times
Question 19 Ma You wish to test the following claim (H₁) at a significance level of a = 0.10. H₂:1 = H₂ Hy: μη < με X You believe both populations are normally distributed, but you do not know the standard deviations for either. However, you also have no reason to believe the variances of the two populations are not equal. You obtain a sample of size n₁ = 24 with a mean of M₁ = 75.8 and a standard deviation of SD₁ = 14.2 from the first population. You obtain a sample of size n₂ = 25 with a mean of M₂ = 88.7 and a standard deviation of SD₂=9.8 from the second population. E What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic- What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value= The p-value is... O less than (or equal to) a O greater than a This test statistic leads to a decision to... O reject the null O accept the null O fail to reject the null
ID Question 20 8EB cula You wish to test the following claim (H₁) at a significance level of a = 0.002. For the context of this problem, d = 2-1 where the first data set represents a pre-test and the second data set represents a post-test. Ho: d = 0 H₁: Hd #0 ▼ You believe the population of difference scores is normally distributed, but you do not know the standard deviation. You obtain pre-test and post-test samples for n = 270 subjects. The average difference (post- pre) is d = 8.9 with a standard deviation of the differences of 8d = 45.7. > What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = The P-value is... What is the P-value for this test? For this calculation, use the conservative under-estimate for the degrees of freedom as mentioned in the textbook. (Report answer accurate to four decimal places.) P-value= PIN O less than (or equal to) a greater than a This P-value leads to a decision to... O reject the null O accept the null O fail to reject the null
Nolan believes a particular coin is coming up heads more than 50% of the time. He would like to test the claim p>0.5. To perform this test, he flips the coin 200 times. Out of those 200 flips, he observes less than half of the flips ended up heads. What do we know about the p-value for this situation? uls E [9 € O The p-value will be exactly O The p-value will be larger than any reasonable significance level. O The p-value will be negative. O The p-value will be exactly 0. The p-value will be smaller than most reasonable significance levels. We need more information. The p-value could be large or small. The p-value will be larger than 1. Pr Explain how you know this about the p-value. Edit Insert Formats BIUX, Ter A ···...F ▼ 13 (> Σ Σ Α Y
Question 22 During a speed dating session, men and women rated each other on five attributes: fun, sincerity, shared interest, intelligence, and ambition. A difference mean was calculated as -0.75 by subtracting the scores in the following order: MALE RATINGS - FEMALE RATINGS. A confidence interval for this difference mean was calculated as: 8. SEB Y cula -2.16<<0.66. Can we support the claim that female ratings are consistently higher? O Yes, there is statistical significance to female ratings being higher. O No, there is not statistical significance to female ratings being higher. O It is impossible to determine if statistical significance exists with the given information. Why or why not? Edit Insert Formats BIUX, ·D··· A Y A <> Σ Σ A