MATHEMATICS HIGH SCHOOL

The random variable x represents the number of phone calls an author receives in a day, and it has a Poisson distribution with a mean of 7.6 calls. What are the possible values of x? Is a value of xequals3.2 possible? Is x a discrete random variable or a continuous random variable?

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

Given that the random variable x represents the number of phone calls an author receives in a day

Poisson distribution is a discrete distribution with random variable countable.

Here no of calls cannot be in fraction or decimal.

Also given that X is Poisson with mean = 7.6

X is discrete since no of phone calls can take values as 1,2,3....

X can take any value from 0 to infinity.

x=3.2 is not possible since 3.2 calls does not exist.

Answer 2

Answer:

Answer:

the possible values of x is 0,1,2,3...

Step-by-step explanation:

Related Questions

Macky wants to open a checking account. He is examining different banks and banking accounts. Then he will choose a bank account for his needs. Which of the following statements should not be one of Macky’s reasons for choosing a bank?a. Being more informed leads to being better prepared to make financial decisions. b. Banks could have charges that Macky does not know about until reading carefully. c. The first bank Macky considered offered a chance to win a prize upon opening an account. d. He will become more aware of how well banks meet his particular needs.
What is the end behavior of the graph of the polynomial function f(x) = 2x3 – 26x – 24?
The ordered pair (0,4) is a solution of what system?
Two auction websites start with 100 members each. At site A, the number of members doubles each month. At site B, 500 new members are added each month. Between months 5 and 6, which website gains more members and by how much?
if the sides of a square are increased by 3m,the area becomes 64m2. find the length of a side of the original square

Yusuf bought a DVD player for $280, now it is $220. What is the percent decrease in the price?

Answers

60 % because 280-220 gets you 60%

Answer:

About 21.4%

Step-by-step explanation:

280 - 220 = 60

60 of 280 = ?

Variable x = percentage

60/280 = x/100

Cross multiply

60 × 100 = 280 × x

6000 = 280x

Divide both sides by 280

6000 ÷ 280 = 280x ÷ 280

21.428.... = x

About 21.4%

Check work:

60/280 = 21.4/100

Cross multiply

60 × 100 = 280 × 21.4

6000 = 5992

6000 is close to 5992

It does not equal exactly 6000 because I estimated the percentage to 21.4% instead of 21.428....%

Transformati in metri: 4 dam. 5hm 2475cm. 14 573mm.0,0124

Answers

1 dam = 10 mt
1 hm = 100 mt
1 cm = 0,01 mt
1 mm = 0,001

*4 dam
4*10 = 40mt

*5 HM
5*100 = 500mt

*2475 cm
2475*0.01 = 247.500 mt

* 14 573mm
14573 * 0.001 = 14.573

Simplify.5 – [–(–2)]

A.
–3

B.
3

C.
–7

D.
7

Answers

5- [-(-2)]
5-2
3

Final Answer: B:3

The answer is A. three because
[-(-2)] makes a positive 2 (because a negative times a negative equals a positive) then subtract the positive 2 from 5 equals positive 3.

What is the value of c so that y=x^2+10x+c is a perfect square trinomial..?A.10
B.25
C.50
D.100

Answers

The letter b .......

Which expression is equivalent to (tangent (StartFraction theta Over 2 EndFraction) ) (negative sine theta)?– 1 – cos(ϴ)
– 1 + cos(ϴ)
1 + cos(ϴ)
1 – cos(ϴ)

Answers

The given expression is equivalent to (-1 + cosθ). Option B is correct.

What is trigonometry?

The field of mathematics is concerned with the relationships between triangles' sides and angles, as well as the related functions of any angle.

The given data in the problem is;

$\rightarrow \rm (tan((\theta)/(2) )(-5sin\theta)\n\n \rightarrow (sin (\theta)/(2) )/(cos (\theta)/(2)) * - (2 sin n (\theta)/(2) * {cos (\theta)/(2))$