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.

c. 56% of the female students received more than 6.3 tickets.

Step-by-step explanation:

Null hypothesis is the statement against which alternative hypothesis is formed and then their validity is checked to conclude whether to accept or reject the null hypothesis. In the given scenario the females receive parking tickets more than males. Male receive on average 4 parking ticket while females receive on average more than 6.3 tickets.

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places