Statistics Final Exam Questions With Correct Solutions.
find the technique for gathering data in the study below.
a study of all league football scores attained through touchdowns and field
goals was conduced by the National Football League to determine whether
field goals account for more scoring events than touchdowns (USA Today) -
accurate answers-census
Data may be classified by one of the four levels of measurement. What is the
name of the lowest level? - accurate answers-nominal
Identify the variable in the information below.
USA Today reported that 44.9% of those surveyed (1261 adults) ate in a fast-
food restaurant from one to three times each week. - accurate answers-
response regarding frequency of at restaurants
Identify the level of measurement corresponding to the data "Salesperson's
performance: below average, average, above average" associated with
robotics. - accurate answers-ordinal
Identify the sampling technique used in the following information.
An important part of employee compensation is a benefits package that might
include health insurance, life insurance, child care, vacation days, retirement
plan, parental leave, bonuses, etc. Suppose you want to conduct a survey of
benefits packages available in private businesses in Hawaii. You want a
sample size of 100. Sampling technique used to get the sample size of 100 is
described below.
Assign each business in the Island Business Directory a number, and then use
a random-number table to select the business to be included in the sample. -
accurate answers-simple random sample
Use a random-number table to simulate the outcomes of tossing a quarter 20
times beginning at row 5, block 3. Assume that the quarter is balanced (i.e.,
fair) and an even digit is assigned to the outcome heads (H) and an odd digit
to the outcome tails (T).
65321 85623 10204 50218 20321 22315
98532 91972 39800 45670 20510 10451
92012 59826 35456 79289 91483 29754
45652 98653 45863 36963 15326 78952
,45678 10100 91251 37041 13712 14672 - accurate answers-
TTHTTTTHHTTTTTHTHHTH
Use a random-number table to get a list of 4 random numbers between 100
and 150 beginning at row 5, block 2.
65321 85623 10204 50218 20321 22315
98532 91972 39800 45670 20510 10451
92012 59826 35456 79289 91483 29754
45652 98653 45863 36963 15326 78952
45678. 10100 91251 37041 13712 14672 - accurate answers-101 0 125 0
137 0 121 0 0 0
Identify whether the variable in the information below is qualitative or
quantitative.
The archeological site of Tara is more than 4000 years old. Tradition states
that Tara was the seat of the high kings of Ireland. Because of its archeological
importance, Tara has received extensive study (Reference: Tara: An
Archeological survey by Conor Newman, Royal Irish Academy, Dublin).
Suppose an archeologist wants to estimate the density of ferromagnetic
artifacts in the Tara region. For this purpose, a random sample of 55 plots,
each of size 100 square meters, is used. The number of ferromagnetic artifacts
for each plot is determined. - accurate answers-quantitative
Identify the implied population in the information below.
Government agencies carefully monitor water quality and its effect on
wetlands (Reference: Environment Protection Agency Wetland Report EPA
832-R-93-005). Of particular concern is the concentration of nitrogen in water
draining from fertilized lands. Too much nitrogen can kill fish and wildlife.
Twenty-eight samples of water were taken at random from a lake. The
nitrogen concentration (milligrams of nitrogen per liter of water) was
determined for each sample. The variable in this information is nitrogen
concentration (mg nitrogen/l water). - accurate answers-nitrogen
concentration (mg nitrogen/l water) in the entire lake
Find the technique for gathering data in the study below.
The Colorado Division of Wildlife netted and released 774 fish at Quincy
Reservoir. There were 219 perch, 315 blue gill, 83 pike, and 157 rainbow
trout. - accurate answers-observational study
, Finish times (to the nearest hour) for 57 dogsled teams are shown below.
Draw a relative - frequency histogram. Use five classes.
261 271 236 244 280 296 284 298 288 288 250 256
338 360 341 333 261 267 287 296 313 311 306 306
299 303 277 283 304 305 287 290 287 288 297 299
332 330 309 326 306 326 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 - accurate answers-make a frequency
chart
Finish times (to the nearest hour) for 59 dogsled teams are shown below.
Draw a relative - frequency histogram. Use five classes.
261 274 236 244 280 296 284 299 290 290 250 256
338 360 341 333 261 268 287 296 313 311 307 307
299 303 277 283 304 305 286 290 286 287 297 299
332 330 309 327 307 327 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 302 319
The frequency table for the above data is given below.
Class Limits Boundaries Midpoint Freq. Rel Freq. Cum Freq.
236 - 260 235.5 - 260.5 248 4 0.07 4
261 - 285 260.5 - 285.5 273 9 0.15 13
286 - 310 285.5 -310.5 298 26 0.44 39
311 - 335 310.5-335.5 323 17 0.29 56
336 - 360 335.5-360.5 348 3 0.05 - accurate answers-
Finish times (to the nearest hour) for 59 dogsled teams are shown below.
Draw a histogram. Use five classes.
261 274 236 244 280 296 284 299 290 290 250 256
338 360 341 333 261 268 287 296 313 311 307 307
299 303 277 283 304 305 286 290 286 287 297 299
332 330 309 327 307 327 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 302 319
find the technique for gathering data in the study below.
a study of all league football scores attained through touchdowns and field
goals was conduced by the National Football League to determine whether
field goals account for more scoring events than touchdowns (USA Today) -
accurate answers-census
Data may be classified by one of the four levels of measurement. What is the
name of the lowest level? - accurate answers-nominal
Identify the variable in the information below.
USA Today reported that 44.9% of those surveyed (1261 adults) ate in a fast-
food restaurant from one to three times each week. - accurate answers-
response regarding frequency of at restaurants
Identify the level of measurement corresponding to the data "Salesperson's
performance: below average, average, above average" associated with
robotics. - accurate answers-ordinal
Identify the sampling technique used in the following information.
An important part of employee compensation is a benefits package that might
include health insurance, life insurance, child care, vacation days, retirement
plan, parental leave, bonuses, etc. Suppose you want to conduct a survey of
benefits packages available in private businesses in Hawaii. You want a
sample size of 100. Sampling technique used to get the sample size of 100 is
described below.
Assign each business in the Island Business Directory a number, and then use
a random-number table to select the business to be included in the sample. -
accurate answers-simple random sample
Use a random-number table to simulate the outcomes of tossing a quarter 20
times beginning at row 5, block 3. Assume that the quarter is balanced (i.e.,
fair) and an even digit is assigned to the outcome heads (H) and an odd digit
to the outcome tails (T).
65321 85623 10204 50218 20321 22315
98532 91972 39800 45670 20510 10451
92012 59826 35456 79289 91483 29754
45652 98653 45863 36963 15326 78952
,45678 10100 91251 37041 13712 14672 - accurate answers-
TTHTTTTHHTTTTTHTHHTH
Use a random-number table to get a list of 4 random numbers between 100
and 150 beginning at row 5, block 2.
65321 85623 10204 50218 20321 22315
98532 91972 39800 45670 20510 10451
92012 59826 35456 79289 91483 29754
45652 98653 45863 36963 15326 78952
45678. 10100 91251 37041 13712 14672 - accurate answers-101 0 125 0
137 0 121 0 0 0
Identify whether the variable in the information below is qualitative or
quantitative.
The archeological site of Tara is more than 4000 years old. Tradition states
that Tara was the seat of the high kings of Ireland. Because of its archeological
importance, Tara has received extensive study (Reference: Tara: An
Archeological survey by Conor Newman, Royal Irish Academy, Dublin).
Suppose an archeologist wants to estimate the density of ferromagnetic
artifacts in the Tara region. For this purpose, a random sample of 55 plots,
each of size 100 square meters, is used. The number of ferromagnetic artifacts
for each plot is determined. - accurate answers-quantitative
Identify the implied population in the information below.
Government agencies carefully monitor water quality and its effect on
wetlands (Reference: Environment Protection Agency Wetland Report EPA
832-R-93-005). Of particular concern is the concentration of nitrogen in water
draining from fertilized lands. Too much nitrogen can kill fish and wildlife.
Twenty-eight samples of water were taken at random from a lake. The
nitrogen concentration (milligrams of nitrogen per liter of water) was
determined for each sample. The variable in this information is nitrogen
concentration (mg nitrogen/l water). - accurate answers-nitrogen
concentration (mg nitrogen/l water) in the entire lake
Find the technique for gathering data in the study below.
The Colorado Division of Wildlife netted and released 774 fish at Quincy
Reservoir. There were 219 perch, 315 blue gill, 83 pike, and 157 rainbow
trout. - accurate answers-observational study
, Finish times (to the nearest hour) for 57 dogsled teams are shown below.
Draw a relative - frequency histogram. Use five classes.
261 271 236 244 280 296 284 298 288 288 250 256
338 360 341 333 261 267 287 296 313 311 306 306
299 303 277 283 304 305 287 290 287 288 297 299
332 330 309 326 306 326 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 - accurate answers-make a frequency
chart
Finish times (to the nearest hour) for 59 dogsled teams are shown below.
Draw a relative - frequency histogram. Use five classes.
261 274 236 244 280 296 284 299 290 290 250 256
338 360 341 333 261 268 287 296 313 311 307 307
299 303 277 283 304 305 286 290 286 287 297 299
332 330 309 327 307 327 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 302 319
The frequency table for the above data is given below.
Class Limits Boundaries Midpoint Freq. Rel Freq. Cum Freq.
236 - 260 235.5 - 260.5 248 4 0.07 4
261 - 285 260.5 - 285.5 273 9 0.15 13
286 - 310 285.5 -310.5 298 26 0.44 39
311 - 335 310.5-335.5 323 17 0.29 56
336 - 360 335.5-360.5 348 3 0.05 - accurate answers-
Finish times (to the nearest hour) for 59 dogsled teams are shown below.
Draw a histogram. Use five classes.
261 274 236 244 280 296 284 299 290 290 250 256
338 360 341 333 261 268 287 296 313 311 307 307
299 303 277 283 304 305 286 290 286 287 297 299
332 330 309 327 307 327 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 302 319
