Question

A hotel maintenance crew wants to estimate how many of the 12,000 lamps in their 30-story hotel need a new light bulb. Which of the following is a random sample of lamps to be inspected?

A
400 lamps on the first 10 floors

B
all lamps in booked rooms

C
all lamps from the rooms with king-sized beds

D
100 lamps on each floor chosen randomly

Answer 1

A local library manager randomly surveys 80 patrons about the type of book they borrow when they visit the library. The manager finds that 3 patrons from the survey borrow novels. If the local library has 345 patrons, approximately how many of them borrow novels when they visit the library? (HINT: It might be helpful to set up a proportion to solve.)



Round your answer to the nearest whole number.




patrons

Answer 2

These are the scores for two randomly selected lacrosse teams. Find the range of the number of goals scored by each team. Based on the range, which team has a more consistent number of goals scored?



Lacrosse Team 1: 6 0 4 17 3 12
Lacrosse Team 2: 23 14 22 14 17
22


The range for Lacrosse Team 1 is


The range for Lacrosse Team 2 is


Based on the range, Lacrosse Team ________
has a more consistent number of goals scored.

Answer 3

Given the data set: 5, 10, 12, 14, 18, 60



Which of the following statements is true regarding this data?

A
The value 60 is the outlier

B
No outliers exist

C
The value 5 is the outlier.

D
Multiple outliers exist.

Answer 4

you sure?

Answer 5

The data set shown below has an outlier. Determine the outlier and then fill out the chart.



Data: 5, 10, 12, 14, 18, 24, 60



If the outlier is excluded, what happens to:

Increase

Decrease

No effect

A
the median?




B
the mean?




C
the mode?




D
the range?