Answers:1. a) F = 3.87, do not reject Ho: no evidence that the restaurants’ mean ratings differ significantly; b) F = 0.602, do not reject Ho: no evidence that the students differ significantly among themselves; c) t = 2.769, reject Ho: restaurant 2 did get significantly higher ratings than restaurant 1. Psychology 2211 Assignment 61. Over the holidays, five students travel to Daytona Beach inFlorida where they share a rented condo. Some eveningsthey each go their separate ways but on 3 nights they eattogether and decide to compare the relative merits of thedifferent restaurants they visit. The following are thestudents' ratings of the overall quality of the 3 restaurantson a 10-point scale (1 = terrible, 10 = outstanding).Students123451 2 38∞4353Restaurants6699683 859574a) Do the restaurants differ significantly in the ratingsthe students assign them (alpha = .05)?b) Overall, do the students differ significantly amongthemselves in their preferences for the 3 restaurants(alpha = .05)?c) Before visiting any of the restaurants, the studentshad heard that restaurant 2 was supposed to bemuch better than restaurant 1 and planned to checkthis out. Do their ratings support the claim (alpha =.05)?

a) To determine if the restaurants differ significantly in the ratings assigned by the students, we…

Answered: Answers: 1. a) F = 3.87, do not reject…

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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Answers: 1. a) F = 3.87, do not reject Ho: no evidence that the restaurants’ mean ratings differ significantly; b) F = 0.602, do not reject Ho: no evidence that the students differ significantly among themselves; c) t = 2.769, reject Ho: restaurant 2 did get significantly higher ratings than restaurant 1.

Psychology 2211 Assignment 6
1. Over the holidays, five students travel to Daytona Beach in
Florida where they share a rented condo. Some evenings
they each go their separate ways but on 3 nights they eat
together and decide to compare the relative merits of the
different restaurants they visit. The following are the
students' ratings of the overall quality of the 3 restaurants
on a 10-point scale (1 = terrible, 10 = outstanding).
Students
12345
1 2 3
8
∞4353
Restaurants
66996
8
3 8
59574
a) Do the restaurants differ significantly in the ratings
the students assign them (alpha = .05)?
b) Overall, do the students differ significantly among
themselves in their preferences for the 3 restaurants
(alpha = .05)?
c) Before visiting any of the restaurants, the students
had heard that restaurant 2 was supposed to be
much better than restaurant 1 and planned to check
this out. Do their ratings support the claim (alpha =
.05)?

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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