When a person stands trial for murder, the jury is instructed to assume that the defendant is innocent. is this claim of innocence an example of a null hypothesis, or is it an example of an alternative hypothesis?

It is a null hypothesis, since it is assumed to be true until evidence can prove otherwise

Explanation:

According to the law, a subject remains innocent until it is proved guilty. The null hypothesis is someone is innocent, the alternative hypothesis is someone is proved guilty.

those sounds of the natural world are bioacoustics, and they're more than a false-color spectrogram of data from the musiamunat conservation area.

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.