At a certain fire station, false alarms are received at a mean rate of .2 per day. In a year, what is the probability that fewer than 60 false alarms are received?

Answers

Answer 1

Answer:

0.064

Step-by-step explanation:

Number of days in a year = 365

Mean rate of false alarm in a year = λ = 365 * 0.2 = 73

Standard deviation, σ = sqrt(λ) = sqrt(73) = 8.54 (for large λ value)

Using the relation :

P(x < 60): (60 - 73) / 8.54

P(x < 60) = - 1.52

P(Z < - 1.52) = 0.06426 (Z probability calculator

= 0.064


Related Questions

Last year, all purchases of a certain product were made either online or in a store. If 55 percent of the purchases were made online, what was the ratio of the number of
purchases made online to the number of purchases made in a store?

Answers

55/44. or simplified to be 5/4.

Hope this helps!

A coach travels 300 miles at an average speed of 40mph.
For how many hours does the coach travel?

Answers

Answer:

so first u would take away 300 form 40 and u would get six the u convert that 260 min to hour then u will get four hours so 4 hrs is ur answers hope this helps

A taxi charges $28.00 for a passenger to travel 16 kilometers.What is the unit rate for this porportional relationship?​

Answers

The unit rate for this proportional relationship is $1.75/kilometer

Troy has an album that has 400 hockey cards. Each page of the album holds 4 hockey cards. If 19% of the album is empty, how many pages are filled with hockey cards?

Answers

Answer:

81 pages

Step-by-step explanation:

From the information given :

Total hockey cards = 400

Cards per page = 4

Number of pages = 400 /4

Number of pages in album = 100

% of album which is empty = 19%

% filled = 100 - 19 = 81%

81% of 100

0.81 * 100 = 81 pages

willie runs 4 miles in 44 minutes. of willie runs at the same rate, how many miles can he run in 143 minutes?

Answers

d=4 mi
t=44 min
v=d/t
rate is 1/11 mi/min
multiply the rate by 143 to get 13 miles

This problem is about mean,mode,median.
I need someone's help on figuring out this process.

Answers

Answer:

mean

Step-by-step explanation:

1. A scientist is growing cell cultures and examining the effects of various substances on them as part of his research. The culture in one petri dish increases according to the expression +47 + 4 for timet in minutes. Another increases according to 12 + 2t+4. He needs to feed all the cells equally, so he needs to know the expression for the total number of cells in both dishes because the food is proportional to the total number of cells. Find the expression.​

Answers

Pay attention in class

THIS IS DUE RN PLEASE HELP!!!

Answers

Answer:

c = 6d

Step-by-step explanation:

the cost is equal to $6/day

This answer ^ is correct

which number is greater radical 7 or 2

Answers

Answer:

2

Step-by-step explanation:

Answer:

radical 7

Step-by-step explanation:

Use your calculator to input radical 7 and you get 2.65

You could also think that 2 is the equivalent of radical 4 - meaning that radical 7 would be more.

What is the area of this figure?

Answers

Answer:

I think the area is 38

Step-by-step explanation:

area =38

Yea it might be 38.

7 (2e-1) - 3 = 6 + 6e
solve for e ​

Answers

Answer:

e=2

Step-by-step explanation:

14e-7-3=6+6e

14e-10=6+6e

14e-6e=6+10

8e=16

e=2

Jessie hiked 5 1/2 miles on saturday, 6 3/4 miles on sunday, and 2 1/3 miles on monday. How many miles did jessie hiked altogether?

Answers

Answer:

Я дурак

Step-by-step explanation:

Я дурак

what's the answers for this question?

Answers

Irrational Is the answer
3/2 is rational

17.2/3 is rational

2.161616 is rational

1.46827514 is rational

29.1156 is rational

Sea p(x) = 2x + 4, calcular p(5) + p(2

Answers

Answer:

the answer is 7p

Step-by-step explanation:

p(5)+p(2)=7p

Please please please answer 8 and 9 will give brainliest and give extra points. Please help fast

Answers

Answer: 7) B: n 8) 8 9) 36- degree rotation

Step-by-step explanation: plz mark me brainliest

8 because that is the rotation dilution

How many solutions does. y = -5x + 6
y = 6 - 5x

Answers

Answer: Infinite solutions

Step-by-step explanation:

This system of equations becomes infinite solutions.

What is the degree?

Answers

Answer:

The answer to the problem is 6

A single die is rolled one time What is the probability of rolling an even number or a 5?

Answers

Answer: 4/6 or 2/3

Step-by-step explanation:

Step-by-step explanation:

Total sample space , n(s) = 6

Favourable cases of rolling even number,

n(e) = 3

Favourable cases of rolling 5 , n(f) = 1

Probability of rolling an even number or a 5 is

= p(e) + p(f)

= n(e) / n(s) + n(f) / n(s)

= 3 / 6 + 1 / 6

= 4 / 6

= 2/3

Hope it will help :)❤

Juan has blood type A, Lilly has blood type AB, and Aaron has blood type O. Is this relation a function? Explain.

This relation is a function. Each name in the domain corresponds to exactly two elements in the range of blood types.

This relation is not a function. Each name in The Domain corresponds to exactly two elements in the range of blood types.

This relation is a function. Each name in The Domain corresponds to exactly one element in the range of blood types.

This relation is not a function. Each name in The Domain corresponds to exactly one element in the range of blood types. ​

Answers

Answer:

This relation is a function

3rd answer

I am confused on how to find the equation for parallel and perpendicular lines and the line parallel and perpendicular to it

Answers

Answer:

Hello what grade is this for?

Here are the questions and answers. Please help!

Answers

B - it moved right 1 and down 3

Can someone help me with this. Will Mark brainliest. Need answer and explanation/work. Thank you!

Answers

Answer:

I hope this helps a little bit.

Solve the inequality and enter your solution as an inequality comparing the
variable to the solution.
-3 > X-11

Answers

Answer:

X<8

Step-by-step explanation:

-3 > X-11

= -3 +11 > X

= 8 >X

X<8

I’LL GIVE YOU BRILLIANCE
(it’s question 15)

Answers

Answer:

one 4 Two yes And 4

Step-by-step explanation:

factor out the gcf from each polynomial 30x^2-18x^3+6x^4

Answers

Answer:

43

Step-by-step explanation:

i need the answers quick

Answers

Answer:

1: 4

2:6

3: 13

4: 36

5: 21

6: 15

7: 21

8: 2

9: 6

10: 45

Step-by-step explanation:

add, subtract, multiply, or divide both sides depending on what problem it is.

hey, just number two:)

Answers

Answer:

85

Step-by-step explanation:

The hypotenuse is 85

The equation for pythagorean theorem is a squared+ b squared= c squared.

7 and 11 squared is 49 and 121

Add them together and then divide the answer by half and you get 85

Find the length of the missing side of the right triangle.
24 ft
7 ft
O 25 ft
O 31 ft
O 22.96 ft
O 625 ft

Answers

Answer:

25 ft

Step-by-step explanation:

Side² = 24² + 7² = 625

√625 = 25 ft

PLEASE HELP!! Due today!!

Answers

Answer:

Amira,  we can tell by looking at the two graphs

Step-by-step explanation:

the blue graph goes through  (1,1) while the red graph goes thur  (1,3)  so because  the y component grows by 3 we know K = 3  

:)

please help me lol. The figure on the left is reflected using line l to form the image on the right. Use the information in the original figure to label the corresponding parts in
the image.
Ite!
Ite
2.2
Ite
Ite
O
143
3.2
0
Ite
1084
Ite
639
O
o
Ite
Ite

Answers

Answer and Step-by-step explanation:

The sides and angles should be the same as the un-reflected version, except everything is flipped. Please see attached picture for reference.

#teamtrees #PAW (Plant And Water)

The sides and angles should be the same as the un-reflected version, except everything is flipped, thus the corresponding parts are attached below.

Explanation of how reflection across axis works?

When a graph is reflected along an axis, say x axis, then that leads the graph to go just in opposite side of the axis as if we're seeing it in a mirror.

If study it more, you will find that its symmetric, thus each point is equidistant from the axis of reflection as that of the image of that point.

Thus, if we are reflecting  a point (x,y) along x axis, then its x abscissa will stay same but y ordinates will negate. Thus (x,y) turns to (x, -y)

Similarly, if we are reflecting a point (x,y) along y axis, the resultant image of the point will be (-x,y)

The sides and angles should be the same as the un-reflected version, except everything is flipped, thus the corresponding parts are attached below.

Learn more about reflection here;

https://brainly.com/question/28186407

#SPJ2

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