In the Spring of 2021 the statistics course did a survey of the average number of parking tickets students received by gender. Which has been shared below. Based on the data below which statement would be the best null hypothesis?

Gender # of hours
male 6
female 8
female 8
male 3
female 7
female 5

a. There is no difference between the two groups.
b. Females on average received 6 tickets while males received 5, because the data is discrete.
c. 56% of the female students received more than 6.3 tickets.
d. Gender is significant.