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 unknown number. Enter your answer in simplest form.<br> 9/10 - ? = 1/2 ?
lord [1]

Answer:

well its 2/5

Step-by-step explanation:

because its 4/10 but you wanted to simplify it so its 2/5

brainlist? its the crown btw

8 0
2 years ago
Read 2 more answers
Which statement about the data is true?
ss7ja [257]
I think it's B, there no repeating number.
7 0
2 years ago
Read 2 more answers
In 2009 there was an endangered population of 270 cranes in a western state. Due to wildlife efforts, the population is increasi
Vitek1552 [10]
Assuming compount interest format

A=P(r+1)^t for compounded per 1 year
A=future amount
P=present amount
r=rate in decimal
t=time in years


given
P=270
r=5%=0.05

the equaton is
A=270(0.05+1)^t or
A=270(1.05)^t
for any year, 2009, is year 0, so if you wanted to input the year then
A=270(1.05)^{t-2009} would be for t=what year it was

A. f(x)=270(1.05)^t


b. 2009 to 2020
2020-2009=11 years
t=11
f(11)=270(1.05)^{11}
f(11)=461.792
about 462 cranes


A. f(x)=270(1.05)^t
B. about 462
8 0
3 years ago
The temperature of a pot of water is 62 ferinit the temperature increases by 20 f per
Thepotemich [5.8K]
I don't under stand what u asked
3 0
2 years ago
Let A = { 0 , 2 , 4 , 6 } , B = { 1 , 2 , 3 , 4 , 5 } , and C = { 1 , 3 , 5 , 7 } . Find { x ∣ x ∈ B or x ∈ C } .
EastWind [94]

Answer:

  {1, 2, 3, 4, 5, 7}

Step-by-step explanation:

x in B or C is ...

  B ∪ C = {1, 2, 3, 4, 5, 7}

5 0
3 years ago
Other questions:
  • What is 35% of 60 answer
    11·1 answer
  • |r|=-2 solve the equation and graph the solution if possible
    8·1 answer
  • What is -7 to the second power
    7·2 answers
  • 7g:1kg to its simplest form​
    5·1 answer
  • Find the value of x
    14·1 answer
  • Using the Pythagorean Theorem, find the length of a leg of a right triangle if the other leg is 8 feet long and the hypotenuse i
    10·2 answers
  • What times what equals = 98?
    11·2 answers
  • Estimate the sum 11 3/8 + 9 7/10 + 21 1/4 by rounding each mixed number to the nearest whole number. Then find the exact sum
    7·1 answer
  • Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong.
    14·1 answer
  • Our bill was $5.79. Avon has a 5.25% tax and our waitress earned a 15% tip. What was the total bill?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!