Amanufacturer claims to have built a home stereo speaker that is 4 feet tall but uses an average of only 30 watts of power. a sample of 40 speakers from the manufacturer found that they used an average of 32 watts of power. the appropriate hypotheses to test the manufacturer’s claim are?

Why is there friction between objects

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario