4. You are interested in knowing if calls for domestic disputes increased in police beats in the week following the shelter in place order in Atlanta following the Covid-19 outbreak. You collect data from police beats the week before the shelter in place order and the week after. The data are collected from the same police beats. You test your null hypothesis at a .01 level of significance using excel. Below are your findings.

t-Test: Paired Two Sample for Means
	Before	After
Mean	35.00	38.14
Variance	776.67	803.48
Observations	7.00	7.00
Pearson Correlation	0.98
Hypothesized Mean Difference	0.00
df	6.00
t Stat	-1.37
P(T<=t) one-tail	0.11
t Critical one-tail	3.14
P(T<=t) two-tail	0.22
t Critical two-tail	3.71

1. Write a null and research hypothesis in symbols.

1. What is the mean number of domestic dispute calls before the shelter in place order?

1. What is the sample size? How do you know?

1. Circle the t critical value that you would use to compare the calculated value of t to.

1. Using the p value from the table, can you reject your null hypothesis? How do you do?

1. Using the t critical value and t calculated value from the table, can you reject your null hypothesis? How do you do?