71- 3covers 95% of the items in a data set.

1. True
2. False

2-A sampling distribution is a distribution of all of the possible values of a sample statistic for a given sample size selected from a population

1. True
2. False

3- The point estimate is the statistic calculated from sample data used to estimate the true unknown value in the population called the parameter.

1. True
2. False

4-Statistics is the branch of Mathematics that transform numbers into unseful information for decision-making.

1. True
2. False

5- Probability of a certain event is one and probability of an impossible event is zero.

1. True
2. False

6-The cumulative frequencies for each class interval is the frequency for that class interval, added to the preceding cumulative total.

1. True
2. False

7-The geometric mean is the measure of central tendency which can be used to compute the average rate of growth?

1. True
2. False

8-The probability is the likelihood or chance that a particular event will occur.

1. True
2. False

9- A Z-score is a numerical measurement that describes avalue's relationship to the mean of a group of value

1. True
2. False

10- A continuous variable is a variable that cannot assume any value on a continuum

1. True
2. False

11- Probability is used as the basis for inferential statistics.

1. True
2. False

12- The Interquartile range is the difference between the highest value and the lowest value

1. True
2. False

13- The confidence interval is a range of values that's likely to include a population value with a certain degree of cnfidence.

1. True
2. False

14- A normal distribution is bell-shaped, symmetrical, the mean, median, and the mode are equal

1. True
2. False

15- The more variation that there is in data set, the larger its standard deviation

1. True
2. False

16- When the population of college professors is divided into groups according to their rank (instructor, assistant, professor, etc.) and then several are selected from each group to make up a sample, the sample is called a cluster sample.

1. True
2. False

17- The Z distribution always has mean = 0 and standard deviation = 1.

1. True
2. False

18- The tendency of the observations to concentrate around a/an range is known as central tendency.

1. True
2. False

19- An observational study is a study that involves no researcher intervention

1. True
2. False

20- The compliment of event A is all the outcomes in sample space that are not included in event A.

1. True
2. False

21- A sample proportion (p)provides an estimate

1. True
2. False

22- The central point is not a measure of central tendency?

1. True
2. False

23- A descriptive measure computed from a sample is called a statistic.

1. True
2. False

24- Are the boundaries of 25.6 ounces is between 25-55 -25-65?

1. True
2. False

25- The standard error is a statistical term that measures the accuracy with which a sample distribution represents a population by usingstandad deviation.

1. True
2. False