FIND THE ERROR Grant read the following axioms for a video game he is playing. • There are four keys hidden on each level.
• Each level ends when the player collects the third key.
The game has 10 levels.
From these axioms, Grant concluded:
to complete the game, he will need to find 30 keys.
- there are 40 keys in the game.
- he can collect all 40 keys in the game.
Are Grant's conclusions correct? Explain your reasoning,

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?