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
Ann [662]
2 years ago
12

The average daily rainfall for the past week in the town of Hope Cove is normally distributed, with a mean rainfall of 2.1 inche

s and a standard deviation of 0.2 inches. If the distribution is normal, what percent of data lies between 1.9 inches and 2.3 inches of rainfall? a) 95% b) 99.7% c) 34% d) 68%
Mathematics
1 answer:
natita [175]2 years ago
6 0

Answer:

D

Step-by-step explanation:

We calculate the z-score for each

Mathematically;

z-score = (x-mean)/SD

z1 = (1.9-2.1)/0.2 = -1

z2 = (2.3-2.1)/0.2 = 1

So the proportion we want to calculate is;

P(-1<x<1)

We use the standard score table for this ;

P(-1<x<1) = P(x<1) -P(x<-1) = 0.68269 which is approximately 68%

You might be interested in
Find the missing side length ED Round answe to the nearest tenth please.
GarryVolchara [31]

Answer:

Step-by-step explanation:

Considering the given triangle EDI, to determine ED, we would apply the sine rule. It is expressed as

a/SinA = b/SinB = c/SinC

Where a, b and c are the length of each side of the triangle and angle A, Angle B and angle C are the corresponding angles of the triangle. Likening it to the given triangle, the expression becomes

ED/SinI = DI/SinE = EI/SinD

Therefore

Recall, the sum of the angles in a triangle is 180°. Therefore,

I° = 180 - (36 + 87) = 57°

Therefore,

ED/Sin 57 = 26/Sin 36

Cross multiplying, it becomes

EDSin36 = 26Sin57

0.588ED = 26 × 0.839

0.588ED = 21.814

ED = 21.814/0.588

ED = 37.1 m

8 0
2 years ago
Please help pleaseeeeeee
marysya [2.9K]

Answer:

B

Step-by-step explanation:

it's basically 2+7

3 0
2 years ago
Read 2 more answers
Can someone help on a construction of a tangent to a circle please, need pictures if possible
Anit [1.1K]

Wassup

Steps:

1. Draw a line connecting the point to the center of the rectangle

2. Then construct a perpendicular bisector to the line drawn in step 1

3. Place the compass on the midpoint of the line, adjust its length to reach the end point, and draw an arc across the circle

4. Where the arc crosses the circle will be the tangent points. So connect the endpoint to the tangent point

Hope the picture helps you too

5 0
3 years ago
Help asap for brainlist help asap
Mariana [72]

Answer:

2x^3+11x^2-43x-24

Step-by-step explanation:

desmos graphing calculator- both factors matched

8 0
2 years ago
What is the midpoint of the line segment with endpoints (-2,-2) and (4, 6)?
zepelin [54]
The correct answer is D. (1, 2)
4 0
3 years ago
Read 2 more answers
Other questions:
  • Lily is in the business of manufacturing phones. She must pay a daily fixed cost to rent the building and equipment, and also pa
    15·1 answer
  • How to work out 215 in a fraction
    14·1 answer
  • Mr.lobo is building a fence around his rectangular yard.It is 16 feet long and 14 feet wide.how many feet of fencing will he nee
    10·1 answer
  • WILL MARK BRAINLIST!!!!!!!!!!<br> |a+x|/ 2 − |a−x|/ 2 if a=−2; x=−6
    15·2 answers
  • −8x+4y=24 What does X and Y equal?<br> −7x+7y=28<br> ​
    15·1 answer
  • Angle ABD and Angle CBD are supplementary angles and Angle CBD and Angle DBE are complementary. If the measure of angle ABD is 1
    12·1 answer
  • This is a similar triangle please find the missing length. (?)
    15·2 answers
  • A triangle with 7,?, and form a right triangle.
    9·1 answer
  • Given f(x)=5x+15 find f(x)=30
    13·1 answer
  • Express (x+9)^2 as a trinomial in standard form.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!