Astudy was conducted in order to estimate μ, the mean number of weekly hours that u. s. adults use computers at home. suppose a random sample of 81 u. s. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be σ = 3.6 hours. a similar study conducted a year earlier estimated that μ, the mean number of weekly hours that u. s. adults use computers at home, was 8 hours. we would like to test (at the usual significance level of 5%) whether the current study provides significant evidence that this mean has changed since the previous year. using a 95% confidence interval of (7.7, 9.3), our conclusion is that:

What led to the creation of suburbs in the early 1900s

Some historians argue that the changes brought by industrialization caused americans to beomce a more secular people. to what extent do you agree or disagree, and why? use evidence from chapter 18 to make your case.

Question 4 of 10 2 points how were the reasons for a person's enslavement different in west african cultures than in the atlantic slave trade? o a. in west african cultures, any unmarried man could be enslaved, while in the atlantic slave trade, only prisoners of war could become slaves. o b. in west african cultures, people had to be born into slavery, while in the atlantic slave trade, people had to commit a crime to become a slave. o c. in west african cultures, people could only become slaves if they owed debts, while in the atlantic slave trade, slavery was used to punish crimes. o d. in west african cultures, people were enslaved through war or as punishment, while in the atlantic slave trade, anyone could be ſom captured and enslaved previous obi