A data set about speed dating includes "like" ratings of male dates made by the female dates. The summary statistics aren=190,x=7.81,s=1.93.Use a0.05significance level to test the claim that the population mean of such ratings is less than8.00.Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.What are the null and alternative hypotheses? A.H0:μ=8.00H1:μ>8.00 B.H0:μ=8.00H1:μ≠8.00 C.H0:μ<8.00H1:μ>8.00 D.H0:μ=8.00H1:μ<8.00Determine the test statistic. nothing(Round to two decimal places as needed.)Determine the P-value. nothing(Round to three decimal places as needed.)State the final conclusion that addresses the original claim. ▼ Fail to rejectRejectH0.There is▼ not sufficientsufficientevidence to conclude that the mean of the population of ratings is▼ less thannotgreater thanequal to

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Description: A data set about speed dating includes "like" ratings of male dates made by the female dates. The summary statistics aren=190,x=7.81,s=1.93.Use a0.05significance level to test the claim that the population mean of such ratings is less than8.00.Ass

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A data set about speed dating includes "like" ratings of male dates made by the female dates. The summary statistics are

n=190,

x=7.81,

s=1.93.

Use a

0.05

significance level to test the claim that the population mean of such ratings is less than

8.00.

Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.

What are the null and alternative hypotheses?

H0:

μ=8.00

H1:

μ>8.00

H0:

μ=8.00

H1:

μ≠8.00

H0:

μ<8.00

H1:

μ>8.00

H0:

μ=8.00

H1:

μ<8.00

Determine the test statistic.

nothing

(Round to two decimal places as needed.)

Determine the P-value.

nothing

(Round to three decimal places as needed.)

State the final conclusion that addresses the original claim.

▼

Fail to reject

Reject

H0.

There is

▼

not sufficient

sufficient

evidence to conclude that the mean of the population of ratings is

▼

less than

not

greater than

equal to

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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