I. State the null hypothesis for the following:a)People who exercise 4 days per week or more are happier than th

I. State the null hypothesis for the following:a)People who exercise 4 days per week or more are happier than those who exercise less than 4 days per week.b)College students are more stressed than their peers who do not attend college.c)Correctional officers have more negative attitudes towards inmates than college students.d)Amount of sleep and ability to focus are positively related. e)Children who are read to regularly have bigger vocabularies than those who are not read to regularly. f)Rates of preventable diseases in a neighborhood are negatively related to the amount of medical practices in the neighborhood.g)Getting child care subsidies (money from the government to help pay for child care) help low-income working parents stay in their jobs longer.