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
ella [17]
3 years ago
8

During the period of time that a local university takes phone-in registrations, calls come in at the rate of one every two minut

es.a. What is the expected number of calls in one hour?b. What is the probability of three calls in five minutes?c. What is the probability of no calls in a five-minute period?
Mathematics
1 answer:
nikklg [1K]3 years ago
3 0

Answer:

Step-by-step explanation:

This is a poisson distribution. Let x be a random representing the number of calls in a given time interval.

a) the expected number of calls in one hour is the same as the mean score in 60 minutes. Thus,

Mean score = 60/2 = 30 calls

b) The interval of interest is 5 minutes.

µ = 5/2 = 2.5

We want to determine P(x = 3)

Using the Poisson probability calculator,

P(x = 3) = 0.21

c) µ = 5/2 = 2.5

We want to determine P(x = 0)

Using the Poisson probability calculator,

P(x = 0) = 0.08

You might be interested in
Can someone help me pleaseeee!!!:(
kherson [118]

Answer:

Step-by-step explanation:

math is a thing pls like this it was meaningful ;;;;;;;;;0

7 0
2 years ago
Read 2 more answers
The value of x is?<br> 84<br> 96<br> 132<br> 264<br> HELPPPP!!!!
Alexandra [31]

The 3 outside angles of a triangle need to equal 360 degrees.

To find X, subtract the 2 outside angles shown from 360.

X = 360 - 130 - 134 = 96

The answer is 96

5 0
3 years ago
Read 2 more answers
I need help with this question
Murrr4er [49]

The number of cows is given by

14\cdot 2^{\frac{y}{5}}

So, after k years, the number of cows will be

14\cdot 2^{\frac{y+k}{5}}

We want this number to be twice as much as the original:

14\cdot 2^{\frac{y+k}{5}} = 2(14\cdot 2^{\frac{y}{5}})

First of all, we can cancel 14 from both sides:

2^{\frac{y+k}{5}} = 2\cdot 2^{\frac{y}{5}}

Finally, on the right hand side, we can use the exponent rule

a^b\cdot a^c=a^{b+c}

to get

2^{\frac{y+k}{5}} = 2^{\frac{y}{5}+1}

To solve this equation, we must impose that the two exponents are the same:

\dfrac{y+k}{5} = \dfrac{y}{5}+1 \iff \dfrac{y+k}{5} = \dfrac{y+5}{5}

And clearly this is true if and only if k=5. So, it will take 5 years for the cow heard to double in number.

You can do the exact same steps to find the doubling time for the sheeps.

8 0
3 years ago
The English Alphabet has 20 letters more than one-fourth the number of letters in the Greek Alphabet. The English Alphabet has 2
krok68 [10]
I will try to help hold on
8 0
3 years ago
PLEASE HELP ME FOR 14 POINTS
9966 [12]

Answer:

i got 34:34:112

Step-by-step explanation:

sorry im bad at explaining things but i added a picture

8 0
3 years ago
Read 2 more answers
Other questions:
  • You spend $77 shopping. You buy some shirts at $12 each, and spend $5 on food. How many shirts did you buy? A. 5x + 12 = 77 B. x
    5·1 answer
  • Two boys who live 14 miles apart start at noon to walk toward each other at rates of 3 mph and 4 mph respectively. In how many h
    6·2 answers
  • Can someone please help me ASAP
    7·2 answers
  • Write the equation of a line, in slope intercept form, that has a slope of 1 and passes through the point (2, 4).
    11·2 answers
  • Will mark brainliest if correct! :)
    11·1 answer
  • How many hours and minutes from noon to a quarter to four in the afternoon?
    9·1 answer
  • Pleaseee help me like I need hp
    10·2 answers
  • 3,15,75,375 9th term
    12·1 answer
  • When somebody tells there friend there da best does that mean they think that they’re better then anyone else???
    11·2 answers
  • Slope of (4,-1) (3,-2)​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!