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nadya68 [22]
3 years ago
6

The random variable KK has a geometric distribution with mean 16. Which of the following is closest to the standard deviation of

random variable KK ?
A. 0.0625
B. 0.9375
C. 4
D. 15.49
E. 240
Mathematics
1 answer:
asambeis [7]3 years ago
5 0

Answer:

E 240

Step-by-step explanation:

Geometric Distribution mean = (1- p) / p

16 = (1 - p) / p

16p = 1 - p  ;  17p = 1 ; p = 1/17 = 0.058  

Standard Deviation = (1 - p) / p^2

= (1 - 0.058) / (0.058)^2

0.942 / 0.003364

= 280 , closest to 240

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Maria and John have decided that once they live in a house, they want to have a pet. They go to an animal shelter and find sever
Natali5045456 [20]

Answer:

Step-by-step explanation:

Hello!

Maria and John want to adopt a pet. The animals available for adoption are:

7 Siamese cats

9 common cats

4 German Shepherds

2 Labrador Retrievers

6 mixed-breed dogs

Total pets available: 28

To reach the probability of each pet category you have to divide the number of observed pets for the said category by the total of pets available for adoption:

P(Siam)= 7/28= 0.25

P(Comm)= 9/28= 0.32

P(Ger)= 4/28= 0.14

P(Lab)= 2/28=0.07

P(Mix)= 6/28=0.21

a.

You need to calculate the probability that the selected pet is a cat, this situation includes the categories "Siamese" and "common cat"

P(Cat)= P(Siam) + P(Comm)= 0.25+0.32= 0.57

b.

You have a total of 16 cats out of 28 pets. If you express it in the ratio: 16:28 → using 4 as a common denominator the odds of selecting a cat is: 4:7

c.

P(Cat∪Mix)

The events "cat" and "mixed-breed dog" are mutually exclusive, so you can calculate the probability of the union of both events as:

P(Cat∪Mix)= P(Cat)+P(Mix)= 0.57+0.21= 0.78

d.

Now you are in the situation that they select a dog that is not a labrador, this situation includes the categories " German shepherd" and "mixed-breed"

P(NotLab)= P(Ger)+P(Mix)= 0.14 + 0.21= 0.35

I hope this helps!

4 0
3 years ago
If I get $18 (USD) every 2 weeks and I start with $45.01 how many weeks will it take to get to $130.17?
gizmo_the_mogwai [7]
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4 0
3 years ago
At the souvenir shop. Theo buys k key chains and p photo frames
stealth61 [152]

Answer:

Total cost of Theo's purchases in terms of k and p=2.49(k + p) + 5.99

Step-by-step explanation:

Cost of k key chain=$2.49

Cost of p photo frames=$2.49

Cost of a T-shirt=$5.99

Total cost of all items=cost of k key chain + cost of p photo frame + cost of The shirt

=2.49k + 2.49p + 5.99

Factorise

2.49 is common to both k and p

=2.49(k + p) + 5.99

Total cost of Theo's purchases in terms of k and p=2.49(k + p) + 5.99

4 0
3 years ago
Help me on number 44 plz
Delvig [45]
All you have to do is write a positive number. let's say 4, then write a positive exponent (that's the tiny number in the right corner of the regular number) and then just write a positive exponent less than 4.
So 4 squared
4 0
3 years ago
earning a base monthly salary of $4000, plus 5% commission on all her sales. If Jane sold two houses last month, totaling $175,0
Rasek [7]

The total amount earned in the month is $12750

<h3>How to determine the total amount earned for the month?</h3>

From the question, we have the following parameters that can be used in our computation:

  • Commission percentage = 5%
  • Base salary = $4000
  • Total sales of house in the month = $175,000

The total amount for the month is then calculated as

Amount = Commission percentage x Total sales in the month + Base salary

Substitute the known values in the above equation

So, we have

Amount = 5% x 175000 + 4000

Evaluate

Amount = 12750

Hence, the amount earned is $12750

Read more about commission at

brainly.com/question/15317792

#SPJ1

8 0
2 years ago
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