The Pastry shop claims that its chocolate cookies have exactly 60% chocolate per cookie.  A chemist invents an additive to increase the life of an automobile battery. He claims that now the lifetime of the automobile battery with the additive is more than 24 months. The 50Cents Store claims that their daily profit is at most $1000. For each of the following claims: Mention what kind of test should be used (one-tail, two-tail) and set up the null and alternate hypothesis. Consider that the critical value is = CV (cv represents a number already retrieved from table, for example 1.96). For each H0, mentioned the acceptance range.

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Author:Amos Gilat
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  1. The Pastry shop claims that its chocolate cookies have exactly 60% chocolate per cookie. 
  2. A chemist invents an additive to increase the life of an automobile battery. He claims that now the lifetime of the automobile battery with the additive is more than 24 months.
  3. The 50Cents Store claims that their daily profit is at most $1000.

For each of the following claims:

  • Mention what kind of test should be used (one-tail, two-tail) and set up the null and alternate hypothesis.
  • Consider that the critical value is = CV (cv represents a number already retrieved from table, for example 1.96). For each H0, mentioned the acceptance range.

 

 

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