Answered: the mean score on a standerdized exam…

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

Question

the mean score on a standerdized exam was 74 with a standerd deviation of 8.3. a random sample of 35 students was selected and their mean score on that exam was calculated. the mean belongeds to sampling distribution. what is the mean of this sampling distribution?

Part B. what is the standerd deviation of this sampling distribution?

Part C. which of the following most closely defines the central limit theorem?

a. All sampling distrib are approx normal, regardless of sample size?

b. as long as the sample size is sufficiently large the sampling distribution of the sample mean is approx normal, regardless of the distrib of the population.

c. all sampling distributions are approximatly normal if the population is large enough.

d. the sampling distrib of the sample mean looks more like the population distribution as the sample size increases.

Part D what is a type 2 error?

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

Expert Solution