1)Determine, to the nearest hundredthth, the mean of the following set of numbers: 98.2, 98.0, 98.4, 98.0, 98.0, 98.9, 99.1, 99.0, 98.8, 99.2, 99.0, 98.9 Round to the nearest hundredth

2)The following data 13, 23, 50, 54, 58, 61, 67, 68, 70, 72, 75, 77, 82, 91, 93 represents the scores on a recent test. Determine the value of the upper boundary above which outliers will be found.

3)Determine the median of the data set 1 4 6 10 19 28 32 41. Type in a numeric response, no rounding.

4)Determine the mode of the data set 68, 58, 66, 58, 86, 89, 93, 99, 86, 103, 68, 58, 58. Type in a numeric response, no rounding.

5)

A category of data would be referred to as an observational unit

	a.	TRUE
	b.	FALSE

6) suppose that out of a production run of lawnmowers of size 1477, 22 prove to be defective.. The relative frequency of non-defective mowers would be (nearest thousandth)

7)

The standard deviation, if unknown, can be estimated by multiplying the range by 4.

	a.	TRUE
	b.	FALSE

8)

Which would be a better test score, one that had a z-score -3.2 or one that had a z-score of 1.25?

	a.	-3.2
	b.	1.25

9)With your TI83, Calculate, to four decimal places, the standard deviation of the following sample information: 7, 5, 7, 11, 2

10)Determine the lower quartile of the data set 2, 4, 9, 13, 14, 18, 21, 47. Type in a numeric response, no rounding.

11)At a certain restaurant in Chicago, the avergage time it takes a person to eat a nice dinner is 58 minutes with a standard deviation of 13 minutes. these times are known to be normally distributed. To Four decimal places, what is the probability a random diner will finish dinner in more than 62 minutes?

12)A normally distributed population has a mean of 74 and a standard deviation of 18. Determine the probability that a random data has a value between 76 and 81. Round to four decimal places.

13)A normally distributed population has a mean of 77 and a standard deviation of 14. Determine the probability that a random data has a value between 70 and 79. Round to four decimal places.

14)normally distributed population has a mean of 74 and a standard deviation of 13. Determine the probability that a random data has a value greater than 76. Round to four decimal places.

15)A normally distributed population of IQ scores has a mean of 107 and a standard deviation of 13. Determine the IQ at the 2nd percentile. Round to the nearest whole number

16)A normally distributed population has a mean of 91 and a standard deviation of 20. Determine the value of the first quartile. Round to the nearest tenth

17)A normally distributed population of IQ scores has a mean of 107 and a standard deviation of 14. Determine the IQ at the 98th percentile. Round to the nearest whole number

18)

The association between the variables "height of a baseball player" and "the player's number" would be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

19)

The association between the variables "chance of health problems" and "weekly cigarette consumption" would typically be

	a.	POSITIVE
	b.	NEGATIVE
	c.	NEITHER

20)The y-intercept, to the nearest hundredth, of the line 4x + (2)y = 5 is

21)Given the linear model -6x + 9y = 7, the "Fit" when x=4 would be...? Round to the nearest hundredth.

22)Given the function -6x + 6y = -5, the slope of this line would be (round to two decimal places)

23)

A linear model is found to be y = 3.5x + 6. Determine the fit at x = 4.

	a.	3.5
	b.	6
	c.	20
	d.	22.3
	e.	2.3

24)

A linear model is found to be y = 3.5x + 6. At a value of x = 4, the equation yields y = 20. However, the actual data value for x =4 is found to be y = 22.3. The residual at x = 20 is

	a.	3.5
	b.	6
	c.	20
	d.	22.3
	e.	2.3

25)

The portion of a data point's error that is explained by a linear model is call a

	a.	Fit
	b.	Residual
	c.	Slope
	d.	Intercept

26)

A regression equation is found to be y=2x+10. The prediction for the dependent variable when the independent variable is 5 would be

	a.	-2.5
	b.	2.5
	c.	-20
	d.	20

27)

A sample that is collected from whatever data happens to quick and easy to get.

	a.	Voluntary response
	b.	Stratified
	c.	Convenience
	d.	Systematic

please answer all