Exam 19: Probability and Statistics in Engineering

This question has four possible answers listed below and only one of them is correct.If you select one at random, what are the odds that you pick the correct answer? a. $1 : 2$ b. 1:3 c. $1 : 4$ d. $1 : 5$

The probability distribution for many engineering experiments is approximated by

A random experiment is one that has random outcomes that cannot be predicted exactly.

The arithmetic average of a list of numbers is known as the

A list of temperature readings (in degrees Celsius) is shown below.Calculate the mean temperature: $72,76,81,69,73,76,75,82,83,68,69,76,74,65,62$

A common way of measuring the dispersion of data is by calculating the

This question has four possible answers listed below and only one of them is correct.If you select one at random, what is the probability that you pick the correct answer? a. $0.75$ b. $0.50$ c. $0.25$ d. $0.10$

There are 20 red marbles and 10 blue marbles mixed together in a cloth bag.If you reach in and pull out a marble, without looking, what are the odds of selecting a blue marble? a. 1:2 b. $1 : 3$ c. $1 : 4$ d. $1 : 5$

A list of temperature readings (in degrees Celsius) is shown below.Calculate the variance for these data: $72,76,81,69,73,76,75,82,83,68,69,76,74,65,62$

Systemic errors are errors

Something with a large number of data points is commonly called a

For normal distribution, what percent of the data will fall in the interval of one standard deviation above and below the mean? a. $50 \%$ b. $65 \%$ c. $68 \%$ d. $95 \%$

The cumulative frequency shows the cumulative number of students with scores up to and including those in the given range.

For any probability distribution, the sum of probabilities is always

The area under a normal distribution curve should always be equal to

The result of an experiment is called

A list of temperature readings (in degrees Celsius) is shown below.Calculate the standard deviation for these data: $72,76,81,69,73,76,75,82,83,68,69,76,74,65,62$

A list of temperature readings (in degrees Celsius) is shown below.Calculate the median temperature: $72,76,81,69,73,76,75,82,83,68,69,76,74,65,62$

The standard deviation is

Random errors