Population Sample Word Problems

Miguel had 25 bacteria in his petri dish at 2 PM. There were 72 in the dish at 2:30 PM. Assuming exponential growth, at what rate are they increasing?

• 9.6% per minute

• 0.03526% per minute

• 35.26% per minute

• 3.526% per minutes

If a population of 300 animals in a certain region is growing exponential at 2% per year, when will the population reach 400?

• 14.4 years

• 15 years

• 6.2 years

• 20 years

Here at Middleburg HS, more and more students are getting onboard with destroying the restrooms out by the math portables. I mean, if I can't go to Tinkletown, nobody can go! The problem first began in 1998 and has continued to grow at a rate of 10% each year. If there were 12 students that started this problem in 1998, how many students would we expect to be onboard with destroying the restrooms in 2023? (Round to the nearest whole number)

Fleming Island High School holds student elections every year to see which student is the most popular. Lately, the school has seen a 5% decrease in voting from one election year to the next. If 910 students voted this year, how many will be expected to vote 8 years from now? (Round to the nearest whole number if necessary).

• 604

• 777

• 902

• 573

A city doubles its size every 10 years. If the population is currently 225,000, what will the population be in 20 years?

• The population will be 225,000.

• The population will be 450,000.

• The population will be 900,000.

• The population will be 1,800,000.

The population of the Metaverse increases by 15% every year. If there are currently 190,000 people in the Metaverse, what will be the population in 13 years?

If necessary, round your answer to the nearest whole number.

• 1,125,860 people.

• 22,972 people.

• 1,169,030 people.

• 1,188,311 people.

As part of a 6th grade statistics project, the teacher brings a candy jar full of gumballs (red & green). The assignment is to estimate the proportion of red gumballs in the jar. Suppose one of the students draws 25 gumballs from the jar: 8 are red, 17 are green. What is the SAMPLE?

• 25 gumballs drawn

• all gumballs in the jar

• the students

• the 17 green gumballs

Identify the Sample:
A restaurant wants to know if customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.

• 20 customers

• All customers

• 8 customers

• Dessert

Identify the following data set:

....In as study about all of the runners in the Peachtree road race last year, the first 10 and the last 50 runners to finish were asked what type of shoe they preferred for the race.

• Sample

• Population

Identify the following data set:….a quality study is being conducted on every 20th battery made at a manufacturing plant.

• Population

• Sample