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
ozzi
3 years ago
8

The amount of snowfall falling in a certain mountain range is normally distributed with a mean of 105 ' and a standard deviation

of 10 ' what is the probability that the mean annual snowfall during 25 randomly picked years will exceed 107.8 'your answer should be a decimal rounded to the fourth decimal place.
Mathematics
1 answer:
Ksenya-84 [330]3 years ago
7 0

The sample mean is μ=105, and sample standard deviation is σₓ=\frac{σ}{\sqrt{n}}  =\frac{10}{\sqrt{25}}  =2.

The Z-score is Z=\frac{ 107.8-105}{2}=1.4.

Refer to standard normal distribution table.

The required probability is

P(X>107.8)=P(Z>1.4)=1-P(Z

You might be interested in
Carlos used 6 boards to build 2/3 of a front porch. How many boards will Carlos use to build the whole porch? Express your answe
antiseptic1488 [7]

Answer:

9 boards

Step-by-step explanation:

2/3 of the porch= 6 boards

so to figure out how much one third of the porch needs you find half of what it takes to fill in 2/3 of the porch and you get 3.

so 3=1/3 of the porch

then you simply do 3times 3 or 3+3+3 and you get 9

so it takes 9 boards to fill the whole porch

8 0
4 years ago
To draw a line segment perpendicular to XY passing through point x
Andrew [12]
What does perpendicular mean? Well, in elementary geometry it mean 2 lines that intersect at a right angle. (90°).

So for Part one. all you need to do is draw a straight line down from the point X. Name the end point of that line M. 

Now you will connect the line M and Z.

Thats it! I hope this helped!! :)




3 0
3 years ago
Read 2 more answers
Answer fast ..................​
Kitty [74]

Answer:

Please check the explanation.

Step-by-step explanation:

Ascending Order:

When we talk about the numbers to be arranged in ascending order, it means the numbers need to be arranged from smallest to largest.

For example, if we have to arrange the numbers from 1 to 5 in ascending order.

It means, the ascending order will be: 1, 2, 3, 4, 5

Now, let us arrange the given numbers in ascending order.

a) 2234 to 2238         2234          2235            2236          2237          2238

b) 4099 to 4103          4099          4100             4101            4102          4103

c) 3298 to 3302          3298          3299            3300         3301           3302

d) 7269 to 7273          7269          7270            7271            7272          7273

e) 6354 to 6358          6354           6355           6356           6357          6358

f) 8379 to 8383           8379           8380            8381           8382          8383

g) 7365 to 7369          7365           7366           7367           7368          7369

5 0
3 years ago
How does the concept of inequality help you describe situations?
kati45 [8]
Try using the back of the book.
3 0
4 years ago
A train goes at a constant speed. If it covers 150 miles in 2 1/2 hours What distance would it cover in 3 hours?
Hoochie [10]

Hi there!

In order to find your answer, you'll need to use the cross product method :

150 miles → 2 1/2 hours = 150 minutes

x miles     → 3 hours = 180 minutes

(150 × 180) ÷ 150 = x miles

27,000 ÷ 150 = x miles

180 = x miles


Your answer is: A train would cover 180 miles in 3 hours.


There you go! I really hope this helped, if there's anything just let me know! :)


8 0
3 years ago
Read 2 more answers
Other questions:
  • paula and ricardo are serving cupcakes at a school party. if they arrange the cupcakes in groups of 2,3,4,5 or 6, they always ha
    13·1 answer
  • (GIVE ME THE BEST ANSWER YOU CAN)
    9·2 answers
  • On average, Stan drinks 3/4 of a 8 ounce glass of water in 1/2 of an hour.
    11·1 answer
  • Find the value of <br>sin 300°.cos 390°-cot 150°.sin 120°​
    13·2 answers
  • HELPPPPPP!!!!!!!!!! ITS DUENSOON PLS
    9·2 answers
  • Find the unit rate.<br><br> 6,601 plants in 287 rows = _________ plants per row
    12·1 answer
  • The mean sustained wind velocity, v, can be determined by the equation v = 6.3 StartRoot 1013 minus p EndRoot, where p is the ai
    14·2 answers
  • How to solve 4/9=28/x in two methods
    9·2 answers
  • Triangle DEF is shown below.
    14·1 answer
  • What is the M&lt;1<br><br> 21<br> 42<br> 71<br> 82
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!