1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maxonik [38]
3 years ago
12

The mean number of births per minute in a country in a recent year was about three. Find the probability that the number of birt

hs in any given minute is​ (a) exactly four​, ​(b) at least four​, and​ (c) more than four.
Mathematics
1 answer:
neonofarm [45]3 years ago
8 0

Answer:

The answer is B

Step-by-step explanation:

You might be interested in
Suppose we want to choose 5 colors, without replacement, from 8 distinct colors.1. If the order is relevant, how many can be don
Charra [1.4K]

(1) From the information given, if we want to choose 5 colors from 8 distinct colors and the order in which the selection is made is relevant, then what we have is a permutation.

The formula is given as;

nP_r=\frac{n!}{(n-r)!}

This formula means we need to select/arrange r items out of a total of n items and the anwer derived would be the total number of arrangements possible.

Therefore, we would have;

\begin{gathered} nP_r\Rightarrow_8P_5 \\ _8P_5=\frac{8!}{(8-5)!}\Rightarrow\frac{8!}{3!} \\ _8P_5=\frac{8\times7\times6\times\ldots1}{3\times2\times1}\Rightarrow\frac{40320}{6} \\ _8P_5=6720 \end{gathered}

Therefore, if the order is relevant, this selection can be done in 6,720 ways.

(2) If the order is NOT relevant, then what we need to calculate is a combination and the formula is;

_nC_r=\frac{n!}{(n-r)!r!}

The formula can now be applied as follows;

\begin{gathered} _nC_r\Rightarrow_8C_5 \\ _8C_5=\frac{8!}{(8-5)!\times5!} \\ _8C_5=\frac{8!}{3!\times5!}\Rightarrow\frac{8\times7\times6\times\ldots1}{(3\times2\times1)\times(5\times4\times\ldots1)} \\ _8C_5=\frac{40320}{6\times120} \\ _8C_5=56 \end{gathered}

If the order is not relevant, then the selection can be done in 56 ways.

3 0
10 months ago
Haaaaaaaaaaaaaaaaaaaaalllllllp plz
MA_775_DIABLO [31]

Answer:

square root of 166, 13, 14

Step-by-step explanation:

5 0
2 years ago
Can someone help me out please?
frozen [14]

Answer:

c is the answer

Step-by-step explanation:

6 0
3 years ago
Which value of x makes the equation true? x – 5.1 = –7.6
ASHA 777 [7]
X-5.1 = -7.6
 +5.1    +5.1
X= -2.5
7 0
3 years ago
Read 2 more answers
How to solve -2+x=19
Andrei [34K]
The answer for the equation is 21
8 0
3 years ago
Read 2 more answers
Other questions:
  • . The length of a rectangle is 32 inches. The width of the rectangle is 17 inches. Which is the perimeter of the rectangle? *
    15·2 answers
  • I need more help I dont understand these letters and numbers​
    8·2 answers
  • What is verbal rule and symbolic rule
    7·1 answer
  • The perimeter of a rectangle is (24+40gh) inches. Factor the expression completely.​
    7·1 answer
  • We need a step by step answer to 2(3 d-1)
    5·1 answer
  • 3. Simplify the expression by combining like terms. 10x+2x+4y
    9·1 answer
  • A garden snail moves<br> 3/5<br> foot in 1/4<br> hour. How far is the snail moving per hour?
    12·2 answers
  • Answer for me please?​
    8·2 answers
  • Please help <br> Show workings!
    7·1 answer
  • Please answer correctly! I will Mark you as Brainliest!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!