A Company Has a Contract to Supply Specialized Batteries to a Manufacturer

question 14

Multiple Choice

A company has a contract to supply specialized batteries to a manufacturer with a mean width of 54mm and a variance of 1.8 or less with an alpha of 0.05.The company randomly tests 20 of these batteries to ensure that they are meeting the requirements of the contract.If the most recent test had a variance of 1.9, what would be the critical value of this chi-squared test?

• A)30.14
• B)32.85
• C)1.645
• D)-30.14
• E)-1.645

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