Answered: Perform a hypothesis test to determine…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Perform a hypothesis test to determine the validity of a claim.

From a sample of 30 grandparents, the average number of grandchildren they have is 5. The mean is 4.733, the level of confidence is 0.05, this is a two-tailed test. Standard deviation: 2.033 Variance: 4.133

State the Hypothesis and identify the claim.

H0: Claim or not a claim

H1: Claim or not a claim

Find the critical value(s) Round the answer to at least two decimal places.

Compute the test value. z=

Make the decision. Reject on not to reject the null hypothesis

Summarize the results.

There is or is not enough evidence to support the claim.

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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