For the given confidence level and values of x and n, find the following.x = 46, n= 98, confidence level 90%Part 1 of 3(a) Find the point estimate. Round the answers to at least four decimal places, if necessary.The point estimate for the given data is 0.4694dloPart 2 of 3(b) Find the standard error. Round the answers to at least four decimal places, if necessary.The standard error for the given data is | 0.0504Part: 2 / 3Part 3 of 3(c) Find the margin of error. Round the answers to at least four decimal places, if necessary.The margin of error for the given data is

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Answered: For the given confidence level and…

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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Given a sample size of 400 with a mean of 80 and the population standard deviation is found to be 35 having a 96% confidence level. What is the length of the confidence interval?show the solutions.
In a random sample of 24 adults > 60 years old, the mean daily calcium intake was 721 mg with a standard deviation of 454. Using this data, answer the following questions. B) Construct a 90% confidence interval for the population mean Based on the confidence interval constructed in part b(Construct a 90% confidence interval for the population mean), is it reasonable to say that the mean daily calcium intake of the population is NOT 850 mg?
When the 2000 GSS asked subjects whether they would be willing to accept cuts in their standard of living to protect the environment, 344 of 1170 subjects said yes. Use 3 decimal places. (a) What is the estimate of the population proportion who would answer yes? (b) What is the margin of error for this estimate? (Assume a 95% confidence level.) (c) Find a 95% confidence interval for the population proportion.(d) Which of the following assumptions are needed for the interval in (c) to be valid?
Refer to the accompanying data set and construct a 90 % confidence interval estimate of the mean pulse rate of adult females; then do the same for adult males. Compare the results. Construct a 90 % confidence interval of the mean pulse rate for adult females. nothing bpmless than muless thannothing bpm (Round to one decimal place as needed.) Construct a 90 % confidence interval of the mean pulse rate for adult males. nothing bpmless than muless thannothing bpm (Round to one decimal place as needed.) Compare the results. A. The confidence intervals do not overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. B. The confidence intervals overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. C. The confidence intervals overlap, so it appears that adult males have a significantly…
Refer to the accompanying data set and construct a 95 % confidence interval estimate of the mean pulse rate of adult females; then do the same for adult males. Compare the results. Construct a 95 % confidence interval of the mean pulse rate for adult females. nothing bpmless than muless thannothing bpm (Round to one decimal place as needed.) Construct a 95 % confidence interval of the mean pulse rate for adult males. nothing bpmless than muless thannothing bpm (Round to one decimal place as needed.) Compare the results. A. The confidence intervals overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. B. The confidence intervals overlap, so it appears that adult males have a significantly higher mean pulse rate than adult females. C. The confidence intervals do not overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. D. The confidence…
Refer to the accompanying data set and construct a 90% confidence interval estimate of the mean pulse rate of adult females; then do the same for adult males. Compare the results. 1.Construct a 90%confidence interval of the mean pulse rate for adult females. _____bpm<μ<____bpm (Round to one decimal place as needed.) 2. Construct a 90% confidence interval of the mean pulse rate for adult males. ____bpm<μ<____ bpm (Round to one decimal place as needed.) 3. Compare the results. A. The confidence intervals overlap, so it appears that adult males have a significantly higher mean pulse rate than adult females. B. The confidence intervals overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. C. The confidence intervals do not overlap, so it appears that adult females have a significantly higher mean pulse rate than adult males. D. The confidence intervals do…
If an interval estimate is said to be constructed at the 90% confidence level, the confidence coefficient would be: Select one: A. 0.9 B. 0.1 C. 0.95 D. 0.05
In a random sample of 50 people, the mean body mass index (BMI) was 27.7 and the standard deviation (s) was 6.12. a. Construct a 90% confidence interval for the population mean. b. Construct a 96% confidence interval for the population mean.
Refer to the accompanying data set and construct a 95% confidence interval estimate of the mean pulse rate of adult females; then do the same for adult males. Compare the results. a. Construct a 90% confidence interval of the mean pulse rate for adult females. (Round to one decimal place as needed.) b. Construct a 90% confidence interval of the mean pulse rate for adult males. (Round to one decimal place as needed.)
To construct a confidence interval for each of the following quantities, say whether it would be better to use paired samples or independent samples. a) The mean difference in weight loss between people on two different diets. b) The mean difference in weight before and after eight weeks on a certain diet. c) The mean difference in standardized test scores between the first and second attempt at the test. d) The mean difference in test scores between students taught by different methods
In a sample of 55 electric motors, the average efficiency (in percent) was 85 and the standard deviation was 2. a) How many electric motors must be sampled so that a 95% confidence interval specifies the mean to within ±0.31? Round up the answer to the nearest integer. b) How many electric motors must be sampled so that a 99.5% confidence interval specifies the mean to within ±0.31? Round up the answer to the nearest integer.
A supplier of eggs to grocers nationwide studied the mean egg length of eggs produced at their farms After selecting a random sample of eggs, they obtained a 95% confidence interval of (45 mm 60 mm) In the context of the problem, which of the following interpretations is correctif any? Choose the correct answer below A. We're 95% confident that the mean length of eggs from this supplier is between 45 mm and 60 mm B. We're 95% confident that an egg from this supplier will be between 45 mm and 60 mm in length For this particular population95% of all eggs from this supplier are between 45 mm and 60 mmin length. . We're 95% confident that the mean length of eggs in the sample is between 45 mm and 60 mm E. None of the above is a correct interpretation

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