Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    0
    ReputationRep:
    Pleease help me solve this.


    A new breakfast cereal is being test marketed in selected cities of
    the east coast of the USA. Consumer panels are being used for the
    evaluation in each of the selected cities. Past test marketing
    experience has indicated that at least 76% of consumer panel
    acceptance must be demonstrated before a product has a good chance
    of being successful.
    After 4 weeks of product use, the consumer reactions which have been
    obtained are as follows:
    Preferred Cereal or considered it as good as others- 468
    Total Responses- 632
    a) Using a 1% level of significance determine whether the
    results indicate that the 76% criterion has been reached.
    b) Suppose that it be known to the researchers, that the true
    proportion of people in the population who prefer the cereal or who
    think it is as good as others is actually 70%. What risk does the
    test you have conducted in part(a) run of erroneously concluding
    that a sample from this proportion could have come from a population
    with a proportion of 0.76 or greater.
    c) For the situation part(b), how does your answer change if
    the true percentage is 74% instead of 70%? What does this imply
    about the choice of the level of significance for the test?
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Did TEF Bronze Award affect your UCAS choices?
    Useful resources

    Make your revision easier

    Maths

    Maths Forum posting guidelines

    Not sure where to post? Read the updated guidelines here

    Equations

    How to use LaTex

    Writing equations the easy way

    Student revising

    Study habits of A* students

    Top tips from students who have already aced their exams

    Study Planner

    Create your own Study Planner

    Never miss a deadline again

    Polling station sign

    Thinking about a maths degree?

    Chat with other maths applicants

    Can you help? Study help unanswered threads

    Groups associated with this forum:

    View associated groups
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.