Q1) Horticulturalist wishes to study growth rate of a particular variety of Bougainvillea. From sample of 16 randomly selected Bougainvilleas, mean growth rate was 2.23 inches/week and sample standard deviation was 0.77 inches/week. Determine a 90% confidence interval for mean growth rate of all Bougainvilleas
a) Between 1.723 and 2.634 inches/week
b) Between 1.893 and 2.567 inches/week
c) Between 1.991 and 2.469 inches/week
d) Between 1.460 and 3.000 inches/week
Student Services office did survey of 500 students in which they asked if student is part-time or full-time. Another question asked whether student was transfer student.
|
|
Transfer
|
Non-Transfer
|
Row Totals
|
|
Part-Time
|
100
|
110
|
210
|
|
Full-Time
|
170
|
120
|
290
|
|
Column Totals
|
270
|
230
|
500
|
Q2) If student is selected at random (from this group of 500 students), determine probability that student is transfer student.
a) 100/500
b) 270/500
c) 210/500
d) 170/500
Q2) If student is selected at random (from this group of 500 students), determine probability that student is a part time student.
a) 210/500
b) 270/500
c) 170/500
d) 100/500
Q3) If student is selected at random (from this group of 500 students), determine probability that student is transfer student and part time student.
a) 210/500
b) 170/500
c) 270/500
d) 100/500
Q4) If student is selected at random (from this group of 500 students), determine probability that student is transfer student or part time student.
a) 210/500
b) 170/500
c) 380/500
d) 480/500