Answered: A random sample of 21 children from the…

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

Related questions

Concept explainers

Question

100%

A random sample of 21 children from the same age group participated in a special language skills program designed to build vocabulary. Measurements at the end of the program showed the children’s vocabularies had a mean of 1060.1 words with a standard deviation of 109.0 words. It is known that the mean vocabulary of children who have taken the special program is greater than 1000 words. Assume that the vocabulary size of children who have taken the program is approximately normally distributed. Conduct a test of hypothesis at the 5% level of significance.

3. A random sample of 21 children from the same age group participated in a special
language skills program designed to build vocabulary. Measurements at the end of
the program showed the children's vocabularies had a mean of 1060.1 words witha
standard deviation of 109.0 words. It is known that the mean vocabulary of children
who have taken the special program is greater than 1000 words. Assume that the
vocabulary size of children who have taken the program is approximately normally
distributed. Conduct a test of hypothesis at the 5% level of significance.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution

Step by step

Solved in 2 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions