The employees of Electronics Inc. would like to have a dental plan as part of their benefits package. The question is: How much does a typical employee and his or her family spend per year on dental expenses? A sample of 57 employees reveals the mean amount spent last year was $2030, with a standard deviation of $550. a. Construct a 90% confidence interval for the population mean. (Round the final answers to the nearest whole dollar.) Population mean $ $ b. The information from part (a) was given to the president of Electronics Inc. He indicated he could afford $1940 of dental expenses per employee. Is it possible that the population mean could be $1940? ...................* v The population mean (Click to select) v$1940 because it is not in the (Click to select) Yes v interval constructed above. could be could not be

MATLAB: An Introduction with Applications
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The employees of Electronics Inc. would like to have a dental plan as part of their benefits package. The question is: How much does a
typical employee and his or her family spend per year on dental expenses? A sample of 57 employees reveals the mean amount spent
last year was $2030, with a standard deviation of $550.
a. Construct a 90% confidence interval for the population mean. (Round the final answers to the nearest whole dollar.)
Population mean $
b. The information from part (a) was given to the president of Electronics Inc. He indicated he could afford $1940 of dental expenses
per employee. Is it possible that the population mean could be $1940?
The population mean (Click to select) v$1940 because it is not in the
(Click to select)
Yes
v interval constructed above.
could be
could not be
Transcribed Image Text:The employees of Electronics Inc. would like to have a dental plan as part of their benefits package. The question is: How much does a typical employee and his or her family spend per year on dental expenses? A sample of 57 employees reveals the mean amount spent last year was $2030, with a standard deviation of $550. a. Construct a 90% confidence interval for the population mean. (Round the final answers to the nearest whole dollar.) Population mean $ b. The information from part (a) was given to the president of Electronics Inc. He indicated he could afford $1940 of dental expenses per employee. Is it possible that the population mean could be $1940? The population mean (Click to select) v$1940 because it is not in the (Click to select) Yes v interval constructed above. could be could not be
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