The mean test score of a sample of 28 students in a Statistics class is 85, with a standard deviation of 7. a) Construct a 96% confidence interval for the mean test score of Statistics students. Round your answer to 3 decimal places. b) What is the margin of error of this interval? The margin of error is i c) Interpret your findings. You can be 96% confident that the population mean is somewhere between d) Is the true population mean likely to be an A (90 or more)? 78 and 92 81 and 90 82 and 88 83 and 85

The mean test score of a sample of 28 students in a Statistics class is 85, with a standard deviation of 7. a) Construct a 96% confidence interval for the mean test score of Statistics students. Round your answer to 3 decimal places. b) What is the margin of error of this interval? The margin of error is i c) Interpret your findings. You can be 96% confident that the population mean is somewhere between d) Is the true population mean likely to be an A (90 or more)? 78 and 92 81 and 90 82 and 88 83 and 85

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

The points scored by teams in the first round of the Statistics Games have a mean of 135 points and a standard deviation of 27 points. A random sample of 36 teams is taken. What is the mean and standard deviation of the sampling distribution of sample means? A The mean is 22.5, and the standard deviation is 4.5. B. The mean is 22.5, and the standard deviation is 27. C. The mean is 135, and the standard deviation is 4.5. D. The mean is 135, and the standard deviation is 27.
An Excel assignment counts for 0-10 points. The scores in a class of 12 students are recorded as follows:1 5 5 6 7 7 8 8 8 9 10 10 What is the deviation of the score 10 from the mean in 13a (recall that this involves a subtraction of the mean from the particular score)? I think I got answer but want to check.
Which of the following answers is correct and why? I really need an explanation for this question.
We are going to calculate the standard deviation for the following set of sample data by hand. Round all values to 4 decimal places where possible. Note: on the exam you can use the calculator function. The data are: 6,7,6, 15, 15 a) Calculate the mean. x = b) Fill in the table. x x-x (x-x)² 6 7 6 15 15 Total c) Calculate the standard deviation. Standard deviation: S= Σ(α - π)2 n-1 S =
Consider the data from the Anthropology 105 class. The mean for women is 64.33 in and the standard deviation is 2.64 in. The average height of men in the US is approximately 5ft 10in. What proportion of women represented here are shorter than the average man?
Among applicants to a school of public health, the average GRE writing score was about 3, the SD was about 0.5, and the lowest score was 2.5. True or False: the GRE writing scores follow the normal curve. Select one: True False Brevious page Next page C
A recent survey of students at Regina Mundi College included a question about the number of school days each student had missed due to illness during one semester. The data are summarized below. For this data set, find Number of Frequency of days missed occurence 20 1 27 2 28 3 15 4 (a) the sample mean, (b) the sample median, and (c) the sample standard deviation.
I need help with this question :) Here are the mean and Standard Deviation for both men and women: Men: Mean 69.0 Standard Deviation: 2.8 Women: Mean 63.6 Standard Deviation: 2.5 Tall Poppies International is a group for vertically gifted individuals (tall people). To join, a man must be at least74 inches tall, and a woman must be at least 70 inches tall.a. What percentage of men are eligible for membership?b. What percentage of women are eligible?c. Are the height requirements fair for men and women?
Consider the following data set. You may assume that the mean of this data set is x¯ = 7. 8 10 3 5 7 5 11 a) Find the range of the data set. b) Find the standard deviation of the data set. c) How many of the seven data points lie within one standard deviation of the mean?
help with 2a-f
Lecture(10.8): The Peabody Picture Vocabulary Test has a standard score mean of 100 and a standard deviation of 15. You tested a class of grade 2 students wonderinf if these scores would be different from the population. After testing this hypotheses you decided to continue looking at this data to determine if there are any group differences based on birth order. You group the children the on whether they are the oldest chlid, middle child, or the youngest child. Here is the data based on grouped information. Oldest child: 87 84 98 104 106 91 96 92 Middle child: 65 74 62 60 73 64 71 78 Youngest child: 115 84 85 83 95 94 108 102 89 Test the hypotheses at (alpha=0.05) level of signifance using the 5 step procedure.Make sure to clearly state the null and alternative hypotheses.Round your answer to 2 decimal. You are encouraged to use the following table to help you…
The goal of the one-sample t-test is to: Group of answer choices describe the location of a score within a distribution compare the mean of a sample to the population mean. compare the means of two samples. compare the standard deviation of a sample to the standard deviation of the population.