Software instruction: A hybrid course is one that contains both online and classroom instruction. In a study performed at Middle Georgia State College, a software package was used as the main source of instruction in a hybrid college algebra course. The software tracked the number of hours it took for each student to meet the objectives of the course. In a sample of 42 students, the mean number of hours was 80.2, with a standard deviation of 51.5. Part: 0 / 20 of 2 Parts Complete Part 1 of 2 (a) Construct a 90% confidence interval for the mean number of hours it takes for a student to meet the course objectives. Round the answers to one decimal place. A 90% confidence interval for the mean number of hours it takes for a student to meet the course objectives

It is given that Sample mean = 80.2Sample std. deviation = 51.5Sample size = 42Confidence level =…

Answered: Construct a 90% confidence interval…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 13PPS

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Software instruction: A hybrid course is one that contains both online and classroom instruction. In a study performed at Middle Georgia State College, a software package was used as the main source of instruction in a hybrid college algebra course. The software tracked the number of hours it took for each student to meet the objectives of the course. In a sample of

students, the mean number of hours was

80.2

, with a standard deviation of

51.5

Part: 0 / 2

0 of 2 Parts Complete

Part 1 of 2

(a) Construct a

90%

confidence interval for the mean number of hours it takes for a student to meet the course objectives. Round the answers to one decimal place.

90%

confidence interval for the mean number of hours it takes for a student to meet the course objectives

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 + ...

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