Answer:the answer is B
Step-by-step explanation:
Okay so the probability of drawing a blue bean is
8 / 29 = .276
29 is the total number of jelly beans
When we have replacement, we do not reduce the number of total jelly beans, so the probably of drawing blue stays the same.
But to find the probability of drawing a blue two times in a row, we must square the probability .
(.276) • (.276) = 0.076
Your answer is 7.6% !
If your have any questions, leave a comment! I hope I helped :)
Two students move through each line per minute.
There are 5 lines and 600 students moved through them in 1 hour. Find out how many students go through each line in that hour:
= Number of students / Number of lines
= 600 / 5
= 120 students per line per hour
If 120 students move in each line every hour, and an hour is equivalent to 60 minutes, the number of student moving per minute is:
= Number of students / Number of minutes in an hour
= 120 students / 60 minutes
= 2 students per minute
There are therefore 2 students moving in every line per minute.
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Answer:
No
Step-by-step explanation:
We have:
n = 80,
p = 0.1 (10%)
q = 1 - p = 1 - 0.1 = 0.9
Usually we use
np > 5, and nq > 5, but this question is using
np > 10, so we'll use that. It means that the proportion times the sample size must be greater than 10, we have
80(0.1) = 8 and
80(0.9) = 72,
since we got 8 as one answer, the situation doesn't hold up.