Answer:
Stratified sampling technique(A)
Step-by-step explanation:
From the question, the population of an high school from which selection was made equals 461 sophomores, 328 juniors and 558 seniors.
35 sophomores, 69 juniors and 24 seniors are randomly selected. The technique used in selecting is Stratified sampling technique. This is because stratified sampling involves dividing the entire population into stratas and then selects a final sample randomly from the different strata. This means that a smaller part of the entire population is used as a sample in drawing conclusions for the entire population.
Answer:
1/9
Step-by-step explanation:
Since Dan has 20 rings and 9 hats out of which 5 hats are blue and 4 rings are red, there is a 5/9 x 4/20 chance that he will pick those two. When you simplify the fractions you get a 1/9 chance that Dan will choose such options.
Answer:
HI hydrogen iodide
Step-by-step explanation:
H2(gas)+I2(gas)---------->2HI(gas)
Answer:
Option D) The data are continuous because the data can take on any value in an interval
Step-by-step explanation:
We are given the following in the question:
Data: The heights (in feet) of different buildings
Discrete and continuous data:
- Discrete data is the data that cannot take values in decimals and continuous data can take values in decimals.
- Continuous data can take any value within an interval.
- Discrete data cannot take all the value within an interval.
- Discrete data is counted where as continuous data is measured.
Thus, height is a continuous data since it can take any values within an interval and is measured.
Thus, the correct answer is
Option D) The data are continuous because the data can take on any value in an interval
There would be 60 questions on the test.
90%=54
1%= 54/90 = 6/10
100%= 6×100/10 =6×10=60
