Solve the Problem. -Mark Can Remember Only the First 4 Digits of His

question 141

Multiple Choice

Solve the problem.
-Mark can remember only the first 4 digits of his friend's phone number. He also knows that the number has 7 digits and that the last digit is not a 0. If Mark were to dial all of the possible numbers
And if it takes him 21 seconds to try each one, how long would it take to try every possibility?

• A)35 minutes
• B)10.5 minutes
• C)350.1 minutes
• D)315 minutes

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Definitions:

Survey

A research method that involves collecting data from a group of respondents through questionnaires or interviews to gather information or opinions.

Inferential Statistics

A branch of statistics that deals with drawing conclusions and making predictions about a population based on a sample.

Control Group

In experimental research, a group of subjects that does not receive the treatment being tested, used as a benchmark to measure how the other tested subjects do.

Naturalistic Observation

An investigative approach where participants are studied in their natural settings without interference from the researcher.