Answered: Test if the mean ratings of the two…

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 8PPS

See similar textbooks

Related questions

Question

Hypothesis Testing: a. What are given? What is asked? b. State the Ho and Ha in words and symbols c. What is the test statistic to be used? Tail of the distribution? d. The critical (or tabular value), the decision rule to be used, draw the graph and shade the rejection region e. Computation of test statistic f. Decision g. Make a conclusion Question: · A manager wants to determine whether Brand A bread has the higher rating than Brand B bread. The manager will use these ratings to make recommendations to the baking companies. Consumers were randomly asked to rate the bread they had bought. Test if the mean ratings of the two bread brands are different. Use ? = 0.05. Assume that the populations are approximately normally distributed with equal variances. · Determine if it is justified to assume that that the ratings on the two brands of bread have equal variability, at 0.05 level of significance. Data:

Transcribed Image Text:populations are approximately normally distributed with equal variances. Brand A 81 Brand B 89 77 75 74 86 90 62 73 91 64 35 68 69 55 37 57 42 Answer: (Insert a picture of your answer and complete solution here.) 98 49

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution