The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed.14241222988 700727835 730744542 6211450950 (a) Find the sample mean. x= (b) Find the sample standard deviation s= (c) Construct a 95% confidence interval for the population mean u. A 95% confidence interval for the population mean is ( __, __ )

From the provided information, Sample size (n) = 12 The data values are as follow: 1424 1222…

Answered: The state test scores for 12 randomly…

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

100%

The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below.

Assume the population is normally distributed.

1424	1222	988
700	727	835
730	744	542
621	1450	950

(a) Find the sample mean.

(b) Find the sample standard deviation

A 95% confidence interval for the population mean is ( __, __ )

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