A statistic is:
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A: Given information- We have given that in a survey of 2310 adults in a certain large country aged 18…
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Q: A recent study indicated that 67% of U.S. adults consider air conditioning a necessity. If a random…
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A: Normal distribution, also known as the Gaussian distribution, is a probability distribution that is…
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A: Given Confidence level=95%
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A: Given, Population mean =μ=8Sample size =n= 34
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Q: Give an example of computing an appropriate sample size using the length of the interval.
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Q: Answer A B and C please! Show work!
A: We have given that Success of probability p =19%=0.19 Number of trials n=13
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Q: a) Assume that nothing is known about the percentage of computers with new operating systems. n=…
A: Given E=3%=0.03
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A: Given, Stem and Leaf plot:
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A: From the provided information, Level of significance (α) = 0.05 n1=940x1=216n2=969x2=281
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- The blood type of 25 nursing students is listed as: O, A, A, B, A, O, A, O, O, A, A, O, O, A, A, B, AB, O, A, A, O, O, A, B, O Find the magnitude of the difference between the proportions of students with blood type A and blood type O.What is defination for p -valueDr. Garcia is curious about her teaching skills. To investigate, her class takes an anatomy quiz. The population average for the anatomy quiz is 15. What can be concluded with a = 0.10? The quiz scores for a random sample from the class are: 16, 17, 18, 16, 19, 15, 18. a) What is the appropriate test statistic? --Select-- b) Population: |---Select--- Sample: ---Select-- c) Obtain/compute the appropriate values to make a decision about Hn. Critical Value = ; Test Statistic = Decision: ---Select--- d) If appropriate, compute the CI. If not appropriate, input "na" for both spaces below. e) Compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. d = ; Magnitude: --Select--- ; Magnitude: --Select--- 2 = f) Make an interpretation based on the results. O Quiz scores for the class were significantly higher than the population. O Quiz scores for the class were significantly lower than the population. O Quiz scores from the class…
- A polling organization has been hired to conduct a survey to determine the proportion of people who are likely to support an upcoming ballot initiative. To help determine the size of the sample required for the main poll, a preliminary poll of 20 people is taken that yields the results below. (Yes indicates that the person will support the initiative, No indicates that they won't.) YesYesNoNoNoYesYesYesYesYesYesNoNoYesYesNoYesYesNoNoYesNoYesNoYesYesYesYesYesYesNoYesYesYesNoNoYesNoNoNo Based on the results of the peliminary poll, how large a sample is required for the main poll, assuming that the main poll should have a margin of error of 3% and a confidence level of 97.8%. Sample Size =A manager of a certain cargo company reported that his company has delivered 8453 packages during the month of January. Based on this information he also claimed that his company would deliver 124,400 packages during the year. уear. Determine whether the manager's claim is an example of a descriptive statistic or an example of an inferential statistic.A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 90% confident that his estimate is in error by no more than five percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n=| (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 98% of computers use a new operating system. n= (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? O A. No, using the additional survey information from part (b) only slightly increases the sample size. O B. Yes, using the additional survey information from part (b) dramatically reduces the sample size. OC. No, using the additional survey information…
- 3 + alckit G esc ~ 3 O DESCRIPTIVE STATISTICS Making reasonable inferences based on proportion statistics alt ! 1 The records of a computer retail store show that out of the 50 customers who purchased a desktop computer last month, all but 17 also purchased a service plan that extends the warranty for an extra year. Out of the 20 customers who purchased a notebook computer last month, all but 4 purchased the same service plan. Fill in the blanks below to make the most reasonable statement possible. Last month, customers of the store who purchased (Choose one) ▼computers were more likely to purchase the service plan. That is because only did not purchase the service plan, whereas % of the customers who bought (Choose one) computers did not purchase the service plan. desktop notebook Explanation Đợt Premier Membership Upgrade Q A FI N @ 2 W S Check F2 X مه H 20 # 3 F3 E D $ 4 Le Answered: The monthly salaries.... 000 F4 R F % 5 V FS www-awu.aleks.com T G A 6 MacBook Air 2 B Y Mathway |…Let X₁, X2, X3,..., Xn denote a random sample of size n from the population distributed with the following probability density function: I e) f) g) where k> 0 is a constant. f(x; 2) = 2-kxk-1e (k-1)! if x > 0 elsewhere " Justify whether or not  is a uniform minimum variance unbiased estimator of 1. Check whether or not the MLE of λ is a consistent. Suggest with a Fisher's factorization theorem, the sufficient estimator of 1.Help
- Anna graduated as number 57 out of 362 students. Joshua graduated as number 29 out of 159 students. Use percentiles to determine which student has a higher position relative to their graduating class. a) What percentile is Anna in? (Enter your answer as a whole number). Answer b) What percentile is Joshua in? (Enter your answer as a whole number). Answer c) Answer has a higher position relative to their graduating class.A choral conductor has 1885 singers in her choir, some of them are professional singers. The conductor wants to estimate what percentage of singers are professional, but can't ask all 1885, so she instead asks 630 singers in front and finds 17 who are professionals. (a) Identify the sample.A. 17/1885B. 630C. singers who were askedD. None of the above. (b) Identify the populationA. percentage of entire singers who are professionalB. entire singersC. 17/1885D. None of the above. (c) What specific type of bias does this scenario demonstrate?A. Voluntary response samplingB. Convenience SamplingC. It is representative of the population.D. None of the above. (d) Identify the parameterA. range of values in which 95% values fallB. percentage of entire singers who are professionalC. 17D. None of the above.
