5.Two 99 percent confidence intervals will be constructed to estimate the difference in means of two populations, Rand W. One confidence interval, Ig, will be constructed using samples of size 9 from each of R and W, and the otherconfidence interval, I81, will be constructed using samples of size 81 from each of R and W.When all other things remain the same, which of the following describes the relationship between the twoconfidence intervals?(A) The width of I81 will be(B) The width of I81 will bethe width of Ig.the width of Ig.(C) The width of I81 will be equal to the width of Ig.(D) The width of I81 will be 3 times the width of Ig.(E) The width of I81 will be 9 times the width of Ig.Page 2 of 4AP Statistics

The objective of the question is to understand the relationship between the widths of two confidence…

Answered: 5. Two 99 percent confidence intervals…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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if n=56, bar-x = 38 and s = 18 construct a confidence interval at a 95% confidence level,assume the data came from a normally distributed population
Alessandro constructed three confidence intervals, all from the same random sample. The confidence levels are 90%, 95%, and 99%. The confidence intervals are Ⅰ. <6.2<μ7.8 Ⅱ. <6.1<μ7.9 Ⅲ. <5.8<μ8.2 Unfortunately, Alessandro has forgotten which confidence interval has which level. Match each confidence interval with its level.
If n = 20, the sample mean = 250, SD = 15, SEM = 3.354, what is the confidence interval (using 95% confidence level). What percent confidence do you have that the population mean is between what two values
How do you solve this problem?
Question 1: The GPAs of nursing students (p1) were compared to GPAs of student-athletes (p2) were compared. Of a sample of 400 randomly and independently selected nursing students, 75% were placed on honor roll. Of a sample of 100 athletes, 80% of the students were placed on honor roll. Calculated the LOWER bound of the 95% confidence interval for the two samples. Round to the nearest hundredth. Question 2: The GPAs of nursing students (p1) were compared to GPAs of student-athletes (p2) were compared. Of a sample of 400 randomly and independently selected nursing students, 75% were placed on honor roll. Of a sample of 100 athletes, 80% of the students were placed on honor roll. Calculated the UPPER bound of the 95% confidence interval for the two samples. Round to the nearest hundredth. Question 3: Copy of The GPAs of nursing students (p1) were compared to GPAs of student-athletes (p2) were compared. Of a sample of 400 randomly and independently selected nursing…
One company recently conducted a survey in which 420 women and 420 men were asked "Are you satisfied with the work of the Minister of Health?". Of these, 155 men and 118 women said they were satisfied with the minister's work. Assume that the experimental design was correct. Questions 1 and 2 cover this survey. 1. Find the upper limit of 95% confidence interval for the difference in the proportion of men and women who are happy with the work of the Minister (let men be group 1). 1. 0.03. 2. 0.09. 3. 0.15. 4. It is not possible to apply a normal approach and therefore we can not calculate the confidence interval. 2. What is the rejection area if it is to be examined whether the proportion of men and women who are satisfied with the job of Prime Minister is different (use a = 0.05)? 1. RejectHO efz 1.96. 2. Reject HO if z> 1.64. 3. RejectHO efz> -1.96 or <1.96. 4. Insufficient information provided to answer this.
In order for a prediction interval for y or a confidence interval for Hyx to be valid, which of the following must hold? a. The true relationship between the predictor variable x and the response variable y must be close to linear. b. The variability of the x-values must be about the same at each fixed y value. c. The variability of the y-values must be about the same at each fixed x value. d. The variability of the x-values and the y-values must be about the same. Select one answer A (c) and (d) must hold B (a) and (b) must hold (b) and (d) must hold D) (a) and (c) must hold
5.
you conducted additional studies with these men and found the following: a. The RR for those who drank one drink per day was 1.50 (95% CI:1.32-1.67) in comparison to the abstainers. b. For those men who drank three or more drinks per day the RR compared to the abstainers was 4.20 (95% CI 2.68-5.85). Question: We can tell from the Confidence Intervals provided in #7 whether there are likely more people in the “one drink a day” group or the “3+ drinks per day” group. Which one likely has more people and how can we tell?
10. We had two experimental conditions, each with 10 participants Set up a 99% confidence interval for the difference using the data below. Report your final answer for each question using proper APA notation. Write a sentence indicating what your answer means. X = 12.2 SS = 54.8 X = 13.8 SS, = 72,5

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