1. An electronics company would like to estimate the web browsing battery life of their tablet. The following data represents the batterylife,inhours,experienced by six users. What is the point estimate for the batterylife,inhours,of thetablet?

10

13

12

16

10

8

A.

10.19

B.

13.26

C.

9.68

D.

11.50

2. A retail chain would like to test if a difference exists between the variability of customer satisfaction scores from two locations. The following data represents satisfaction scores from a random sample of customers from these locations on a scale of1-20.

Location 1	12	14	20	18	15	17	16
Location 2	18	19	17	18	16	20

What is the degrees of freedom for the critical value for Population2?

A.

6

B.

4

C.

7

D.

5

1. The federal government would like to test the hypothesis that the average age of men filing for Social Security is higher than the average age of women set using alphaequals=0.05with the data below. If Population 1 is defined as men and Population 2 is defined aswomen,what is the correct hypothesis statement for this hypothesistest?

   	Men	Women
   Sample mean	64.5 years	63.6 years
   Sample size	35	39
   Population standard deviation	3.0 years	3.5 years

   A. H00: mu11minusmu22equals=0; H11: mu11minusmu22not equals0 B. H00: mu11minusmu22less than or equals0; H11: mu11minusmu22>0 C. H00:mu22minusmu11less than or equals0; H11: mu22minusmu11>0 D. H00: mu11minusmu22greater than or equals0; H11: mu11minusmu22<0 4. the canadian government would like to test hypothesis that standard deviation for hourly wage men is equal women. following data summarizes sample statistics wages and

   	Men	Women
   Sample standard deviation	$6.10	$6.80
   Sample size	21	25

   What is thecorrect hypothesisstatement? A. H00: sigma Subscript Men Superscript 22Mengreater than or equalssigma Subscript Women Superscript 22Women; H11: sigma Subscript Men Superscript 22Mensigma Subscript Women Superscript 22WomenC. H00: sigmaSubscript MenMenequals=sigmaSubscript WomenWomen; H11: sigmaSubscript MenMennot equalssigmaSubscript WomenWomenD. H00: sigma Subscript Men Superscript 22Menequals=sigma Subscript Women Superscript 22Women; H11: sigma Subscript Men Superscript 22Mennot equalssigma Subscript Women Superscript 2 5. Determine whether the statement is true or false. A factor in an ANOVA test describes the cause of the variation in the data. True False 6. The Canadian government would like to test the hypothesis that the standard deviation for the hourly wage for men is equal to the standard deviation for the hourly wage for women. The following data summarizes the sample statistics for hourly wages for men and women.

   	Men	Women
   Sample standard deviation	$6.10	$6.80
   Sample size	21	25

   What is thecorrect hypothesisstatement? A. H00: sigma Subscript Men Superscript 22Mengreater than or equalssigma Subscript Women Superscript 22Women; H11: sigma Subscript Men Superscript 22Mensigma Subscript Women Superscript 22WomenC. H00: sigmaSubscript MenMenequals=sigmaSubscript WomenWomen; H11: sigmaSubscript MenMennot equalssigmaSubscript WomenWomenD. H00: sigma Subscript Men Superscript 22Menequals=sigma Subscript Women Superscript 22Women; H11: sigma Subscript Men Superscript 22Mennot equalssigma Subscript Women Superscript 2