The following C.I.s were obtained for the mean of the same populat [16, 23] and [18, 25]. Identify the correct row in the Table below: No. of Sample Level of
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![Q8. The following C.I.s were obtained for the mean of the same population:
[16, 23] and [18, 25].
Identify the correct row in the Table below:
No. of
Sample
Level of
Samples
size
confidence
А.
2
Same
same
В.
1
Different
same
С.
1
Same
different
D.
2
Same
different
O A. C
В. В
О С. D
O D. A](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F85b2271d-4955-498f-ac59-0c99c1246d5a%2F216a74eb-fcbd-4ac2-a130-5e11de30a3d5%2Fjiqhx04_processed.png&w=3840&q=75)
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- If one sample with a mean of M = 10 is combined with a second sample with a mean of M = 20, then the mean for the combined sample will be between 10 and 20. True FalseOne sample has a mean of M=8 and a second samplehas a mean of M=16. The 2 samples are combined into a single set of scores. What is the mean for the combined set if the first sample has n=3 and the second sample has n=5 ? What is the mean for the combined set if both of the original samples have n=4 scores?A) one sample of n=10 scores has a mean of m=8, and a second sample of n=5 scores has a mean of m=12. If the two samples are combined, what is the mean for the combined sample? One sample has a mean m=6, and a second sample has a mean of m=12, the two samples are combined into a single set of scores. B) what is the mean for the combined set if both of the orginal samples has n=4? C) what is the mean for the combined set it the first sample has n=3 and second sample has n=6?
- A normal population has a mean of µ = 80 with σ = 20. a. If a single score is randomly selected from this population, how much distance, on average, will be found between the score and the population mean? b. If a sample of n = 25 scores is randomly selected from this population, how much distance, on average, will be found between the sample mean and the population mean? c. If a sample of n = 100 scores is randomly selected from this population, how much distance, on average, will be found between the sample mean and the population mean?A professor found out from a senior professor that engineering students in Harp University tend to do good in their Engineering Management subject, claiming that historically, the mean grade of engineering students in the said course is 1.50. Curious if this claim was true, the professor took a random sample of 9 students who took the engineering management subject. Before collecting data, he was undecided about his own claim because he knew of some students who did really good in the course but has also encountered others who did poorly. He found that their mean grade for the course is 1.35 with a standard deviation of 0.50. Use the Test of Significance Approach in testing the professor’s claim. a. Estimate population mean at 90% confidence interval. b. Between z and t, which is more appropriate to use given the data? Why? c. What are the chances that your estimate of population mean was wrong? Describe and explain a potential source of error to your estimate. d. Holding % of CI…One sample has a mean of M=6, and a second has a mean of M=12. The two samples are combined into a single set of scores. What is the mean for the combined set if both of the original samples have n=4 scores?
- A simple random sample of heights of 6400 Englishmen has a mean of67.85 inches and SD 2.56 inches, while a simple random sample of heightsof 1600 Australians has a mean of 68.55 inches and SD of 2.52 inches. Dothe data indicate that Australians are, on the average, taller thanEnglishmen?Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores than students who studied text presented on the screen. In a related study, a professor noticed that several students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the entire class was μ= 81.7, but the sample of n = 9 students who used e-books had a mean of M = 77.2 with ((SS =392) Is the sample sufficient to conclude that scores for students using e-books were sufficiently different from scores for the regular class? Use a two-tail test with α= .01 Please answer the question using all of the steps presented on your practice problem assignment. (null in word, alternative in words, null in symbols, alternative in symbols, critical region t, df, all steps in the analysis computing your computed t, make a decision, and give a conclusion. Do not skip around in the steps. Provide steps in an orderly…Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores than students who studied text presented on the screen. In a related study, a professor noticed that several students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the entire class was μ= 81.7, but the sample of n = 9 students who used e-books had a mean of M = 77.2 with ((SS =392) Is the sample sufficient to conclude that scores for students using e-books were sufficiently different from scores for the regular class? Use a two-tail test with α= .01. Please answer the question using all of these steps: null in word, alternative in words, null in symbols, alternative in symbols, critical region t, df, all steps in the analysis computing your computed t, make a decision, and give a conclusion.
- Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores than students who studied text presented on the screen. In a related study, a professor noticed that several students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the entire class was μ= 81.7, but the sample of n = 9 students who used e-books had a mean of M = 77.2 with ((SS =392) Is the sample sufficient to conclude that scores for students using e-books were sufficiently different from scores for the regular class? Use a two-tail test with α= .01.(not .05). Please answer the question using all of the steps presented on your practice problem assignment. (null in word, alternative in words, null in symbols, alternative in symbols, critical region t, df, all steps in the analysis computing your computed t, make a decision, and give a conclusion. 1. Make a decision about the null hypothesis and…Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores than students who studied text presented on the screen. In a related study, a professor noticed that several students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the entire class was μμμμ= 81.7, but the sample of n = 9 students who used e-books had a mean of M = 77.2 with ((SS =392) Is the sample sufficient to conclude that scores for students using e-books were sufficiently different from scores for the regular class? Use a two-tail test with α= .01.(not .05). Please answer the question using all of the steps presented on your practice problem assignment. (null in word, alternative in words, null in symbols, alternative in symbols, critical region t, df, all steps in the analysis computing your computed t, make a decision, and give a conclusion. Do not skip around in the steps. Provide steps…Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores than students who studied text presented on the screen. In a related study, a professor noticed that several students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the entire class was μ= 81.7, but the sample of n = 9 students who used e-books had a mean of M = 77.2 with ((SS =392) Is the sample sufficient to conclude that scores for students using e-books were sufficiently different from scores for the regular class? Use a two-tail test with α= .01.(not .05). n = df = M = μ = SS = s2 = sM b. State the hypotheses and select alpha c. Locate critical region for stated alpha d. Compute test statistic (t-score)Sample variance s²:Estimated standard error sₘ:Computed t statistic: e. Make a decision about the null hypothesis and state a conclusion.
