Math  /  Data & Statistics

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Which type of error? Batteries used in a certain heart pacemaker have a mean life of 7 years. A new type of battery is being tested and will be used in place of the old battery if it can be shown to have a mean lifetime of more than 7 years. A test is made of H0:μ=7H_{0}: \mu=7 versus H1:μ>7H_{1}: \mu>7. There are two possible errors. Identify them.
Part 1 of 2 (a) The true mean is 7 or less, but the new batteries are used.
This is a Type \square error.
Part: 1/21 / 2
Part 2 of 2 (b) The true mean is greater than 7, but the new batteries are not used.
This is a Type \square (Choose one) error. Start over Skip Part Check Save For Later Submit Assignment 02024 McGraw Hill LLC. All Rights Reserved. Terms of Use |'Privasy Center 1 Accessibility

Studdy Solution
Identify the error in Part 2 of 2:
(b) The true mean is greater than 7, but the new batteries are not used.
This is a Type II error because we are failing to reject H0 H_0 when it is false.
The identified errors are: (a) Type I error (b) Type II error

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