Test the null hypothesis, Applied Statistics

A consumer preference study involving three different bottle designs (A, B, and C) for the jumbo size of a new liquid detergent was carried out using a randomized block experimental design, with supermarkets as blocks.  Specifically, four supermarkets were supplied with all three bottle designs, which were priced the same. The table below shows the number of bottles of each design sold in a 24-hour period at each supermarket. Using these data, it is determined that SST = 586.1667, SSB = 421.5667, and SSE = 1.8333.

                                                 Supermarkets, j

       Bottle Design, i               1       2       3       4

               A                               16     14       1       6

               B                              33     30     19     23

               C                              23     21       8     12

a) Test the null hypothesis Ho that no differences exist between the effects of the bottle designs on mean daily sales.  Set α = 0.05. Can we conclude that the different bottle designs have different effects on sales?

b) Test the null hypothesis Ho that no differences exist between the effects of the supermarkets on mean daily sales. Can we conclude that the different bottle designs have different effects on mean sales?

Posted Date: 3/8/2013 4:04:30 AM | Location : United States

Related Discussions:- Test the null hypothesis, Assignment Help, Ask Question on Test the null hypothesis, Get Answer, Expert's Help, Test the null hypothesis Discussions

Write discussion on Test the null hypothesis
Your posts are moderated
Related Questions
Examining the Population Variance Business decision making does not limit itself to setting up the hypothesis to test for the equality of more than two means or proportions sim

Find the minimum constant workforce: ABC Company, a manufacturer of roofing supplies, has developed monthly forecasts for roofing tiles. The forecasted demand and the expected

The Null Hypothesis - H0:  The random errors will be normally distributed The Alternative Hypothesis - H1:  The random errors are not normally distributed Reject H0: when P-v

Examine the given statement, then express the null hypothesis H0 and the alternative hypothesis H1 in symbolic form. The mean weight of women who won a beauty pageant is equal t

Advantages By definition, mode is the most typical or representative value of a distribution. Hence, when we talk of modal wage, modal size of shoe or modal size of family i

In simple regression the dependent variable Y was assumed to be linearly related to a single variable X. In real life, however, we often find that a dependent variable may depend o

The following data give the repair costs (in RM) for 30 randomly selected cars from a list of cars involved in collisions. a)  By using RM 1 as the lower limit of the first

Explain what central tendency and variability are. In your answer define what the mean, median, mode, variance, and standard deviation are. What is the difference between the descr

(a) At a stream gauging station, the following discharges and stage measurements were taken for the purpose of the rating curve at that section: Stage (m) 1

Multi stage or Cluster Random sampling  Under this method, the random selection is made of primary, intermediate and final units from a given population. The area of investigat