Find the confidence interval for estimating the population proportion for parts (a) through (c).a. 95% confidence level; n = 550; p=0.10b. 90% confidence level; n = 280; p=0.01c. α=0.09; n=375; p=0.70a. The confidence interval is

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Answered: Find the confidence interval for…

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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A statistics class is estimating the mean height of all female students at their college. They collect a random sample of 42 female students and measure their heights. The mean of the sample is 65.3 inches and the sample standard deviation is 5.4 inches. Find the 90% confidence interval for the mean height of all female students in their school? Assume that the distribution of individual female heights at this school is approximately normal. 1. The t value is 1.3025 2. The standard error has a value of -- 3. The margin of error has a value of 4. Find the 90% confidence interval for the mean height of all female students in their school
Calculate the margin of error and construct the confidence interval for the population mean using the Student's t- distribution (you may assume the population data is normally distributed). T-Distribution Table a. x=85.3, n=64, s=16.5, 99% confidence E== Round to two decimal places if necessary <#< Round to two decimal places if necessary
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. Click the icon to view the pulse rates for adult females and adult males. i Pulse Rates Construct a 90% confidence interval of the mean pulse rate for adult females. | bpm<µ< bpm (Round to one decimal place as needed.) Pulse Rates (beats per minute) Males Females 82 74 78 86 75 64 95 82 47 72 55 70 59 75 65 77 53 52 57 84 60 69 80 93 53 56 79 88 78 80 88 90 52 75 88 93 65 65 59 95 73 64 37 68 60 98 66 92 65 56 85 80 80 68 78 82 80 60 76 76 65 58 63 56 66 67 66 99 99 69 81 73 41 83 59 75 85 56 63 74 Enter your answer in the edit fields and then click Check Answer.
Which confidence interval would lead you to Fail to Reject H0? Group of answer choices Test value: 10 Confidence Interval: 13.1 – 15.1 Test value: 5 Confidence Interval: 5.6 – 6.9 Test value: 5 Confidence Interval: 4.5 – 6.3 Test value: 10 Confidence Interval: 9.2 – 9.8
A new fertilizer was applied to the soil of 290 bean plants., 30% showed increased growth. Find the margin of error and 95% confidence interval for the precentage of all bean plants which show increased growth after application of the fertilizer. Round to 2 decimals 1. Margin of Error (as a percentage) 2. Confidence Interval ____________% to _____________%.
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Interpretation of the data. t = -3.4554, df = 6991, p-value = 0.0002763 alternative hypothesis: true mean is less than 50 95 percent confidence interval: -Inf 49.25556 sample estimates: mean of x 48.57909
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Determine whether the following statements are True or False: If we increase the confidence level C, then the width of the CI decreases, i.e., the CI becomes narrower. (Hint: think about what happens to the margin of error m) Suppose the mean of a population µ = 100. If we found that the margin of error is m = 2 for level of confidence 98%, then we can be 98% confident that a sample mean (computed from a sample of the same size used to compute m) is in the interval (98, 102).
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
Construct a confidence interval for p, - p2 at the given level of confidence. X1 = 35, n, = 254, x2 = 31, n2 = 300, 90% confidence %3D ... The researchers are % confident the difference between the two population proportions, p, - P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)

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Find the confidence interval for estimating the population proportion for parts (a) through (c). a. 95% confidence level; n = =550; p = 0.10 A b. 90% confidence level; n = 280; p = 0.01 c. α=0.09; n = 375; p = 0.70 a. The confidence interval is