**Answer:**

a). Please Find Table in Attachment

b-1). 10

b-2). 10%

b-3). 98%

b-4). 2%

**Step-by-step explanation:**

According to the Question,

- Given, The manager of a nightclub near a local university recorded the ages of the last 100 guests.

**a). (For Table Please Find in Attachment)**

**b-1).** the guests were at least 26 but less than 30 years old is 78-68 = **10 Guests.**

**b-2).** The percentage of the guests were at least 22 but less than 26 years old is (10/100)*100 = **10%**

**b-3).** The percent of the guests were younger than 34 years old is (98/100)*100 = **98%**

**b-4).** The percent were 34 years or older is (2/100)*100 = **2% .**