A sample of 58 research cotton samples resulted in a sample average percentage elongation of 8.19 and a sample standard deviation of 1.41. Calculate a 95% large-sample CI for the true average percentage elongation u. (Round your answers to three decimal places.)What assumptions are you making about the distribution of percentage elongation?O We assume the distribution of percentage elongation is normal with the value of o known.O We assume the distribution of percentage elongation is uniform.O We assume the distribution of percentage elongation is normal with the value of o unknown.O We make no assumptions about the distribution of percentage elongation.

Answered: Image /qna-images/answer/4555a823-6fb8-447a-88d0-049532aa35f8.jpg

Answered: A sample of 58 research cotton samples…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Please answer #16
A normal distribution has a mean of 85.3 and a standard deviation of 4.83. Find the data value corresponding to the value of z given. (Enter your answer to four decimal places.) z = 0.65
Assume the samples are random and independent, the populations are nomally distributed, and the population variances are equal. The table available below shows the prices (in dollars) for a sample of automobile batteries. The prices are classified according to battery type. At a = 0.10, is there enough evidence conclude that at least one mean battery price is different from the others? Complete parts (a) through (e) below. E Click the icon to view the battery cost data. (a) Let u1. P2. H3 represent the mean prices for the group size 35, 65, and 24/24F respectively. Identify the claim and state Ho and H. H Cost of batteries by type The claim is the V hypothesis. Group size 35 Group size 65 Group size 24/24F 101 111 121 124 D 146 173 182 278 124 140 141 89 (b) Find the critical value, Fo, and identify the rejection region. 90 79 84 The rejection region is F Fo, where Fo = (Round to two decimal places as needed.) (c) Find the test statistic F. Print Done F= (Round to two decimal places as…
f the standard deviation of a normally distributed population is 22.0 and we take a sample of size 4, then the standard error of the mean is
Weights of women of a certain age group are normally distributed with a standard deviation of 17.7 pounds. A researcher wishes to estimate the mean weight of all women in this age groups. Find how large a sample must be drawn in order to be 90% confident that the sample mean will not differ from the population mean by more than 3.5 pounds. As a suggestion, use z to 3 decimal places. 70 69 91 55 OO O
A recent personalized information sheet from your wireless phone carrier claims that the mean duration of all your phone calls was μ=3.1 minutes with a standard deviation of σ=2.4 minutes. From a random sample of n=50 calls, your parents computed a sample mean of x=4.1 minutes and a sample standard deviation of s=3.2 minutes. Complete parts a through e below. a. Sketch the population distribution for the duration of your phone calls. What are its mean and standard deviation? b. What are the mean and standard deviation of the data distribution? c. Find the mean and standard deviation of the sampling distribution of the sample mean. d. Is the sample mean of 4.1 minutes unusually high? Find its z-score and comment. e. Your parents told you that they will kick you off the plan when they find a sample mean larger than 4.2 minutes. How likely is this to happen? P(x>4.2 minutes)= ?
A normal distribution has a mean of 85.8 and a standard deviation of 4.89. Find the data value corresponding to the value of z given. (Enter your answer to four decimal places.) z = −3.49
In a population of a certain species of newt, the mean length of the newts is μ= 63 inches and the standard deviation is σ= 3.4 inches. You collect a random sample of n=16 newts. The bell curve below represents the distribution of these sample means. The scale on the horizontal axis is the standard error of the sampling distribution. Complete the indicated boxes, correct to two decimal places. mean of distribution= standard error= Note: The left box is 2 standard errors below the mean. The middle box is the mean. The right box is 2 standard errors above the mean.
Suppose that IQ scores have a bell-shaped distribution with a mean of 98 and a standard deviation of 17. Using the empirical rule, what percentage of IQ scores are greater than 115? Please do not round your answer. Answer How to enter your answer (opens in new window) 442 1 9 a Z mebook x360 ning from any angle. 2 S # 3 X e C $ 4 % 5 JL r t f g 6 b y h & 7 O n % * 8 N O i m ( 9 k 4 O 0 1 alt P i Tables Keypad Keyboard Shortcuts Submit Answer [ + ? 1 It Oct 2 10:29 4 1 8 backspace USE YOUR SMARTPHONE FOR
A variable x has a normal distribution with a mean of 250 and a standard deviation of 20. What value of x would have a tail area of 5.5% to the left of the mean? 270270 230230 281.9639281.9639 218.0361
HW Score: 0%, 0 of 8 points O Points: 0 of 1 Part 1 of 2 A population has a mean u=79 and a standard deviation o = 8. Find the mean and standard deviation of a sampling distribution of sample means with sample size n= 64. H: = (Simplify your answer.)
A normal distribution has a mean of 85.6 and a standard deviation of 4.83. Find the data value corresponding to the value of z given. (Enter your answer to four decimal places.) z = 0.75

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS