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
Degger [83]
3 years ago
13

The average commute to work (one way) is 25 minutes according to the 2005 American Community Survey. If we assume that commuting

times are normally distributed and that the standard deviation is 6.1 minutes, calculate the probability that a randomly selected commuter spends for the following cases.
1. More than 31 minutes commuting one way.
2. Less than 8 minutes commuting one way.
Mathematics
1 answer:
Stolb23 [73]3 years ago
7 0

Answer:

1. 0.1635

2. 0.0026

Step-by-step explanation:

The computation of the probability in the following cases are as follows:

1.

Given that

Mean = 25 minutes

ANd, the standard deviation is 6.1 minutes

So here the z score would be

= (31 - 25) ÷(6.1)

= 0.98

Now the probability is

= P(Z>0.98)

= 0.1635

2. the z score would be

= (8 - 25) ÷(6.1)

= -2.79

Now the probability is

= P(Z<-2.79)

= 0.0026

You might be interested in
Select the set of ordered pairs that does not satisfy the requirements of a function.
inysia [295]
For a function to be a function there cannot be any x’s repeated. In this case, you’re looking for a function that has an x repeated. The answer is {(1,1),(1,2),(1,3),(1,4)}
8 0
2 years ago
Please help!!!!! will mark brainliest
Bezzdna [24]

Answer:

It should be B- an=3n+1 because it seems to be adding one every time

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Given the following three arithmetic sequences : 1, 3, ... and 1, 4, ... and 1, 5, ... A number is randomly selected from 1 to 1
ladessa [460]

Answer:

  0.333

Step-by-step explanation:

The first sequence starts at 1 and has a common difference of 2. It will include every odd number in the range.

__

The second sequence starts at 1 and has a common difference of 3. It will include odd numbers and the even numbers 4, 10, 16, .... That is, all even numbers of the form 6n -2 will be included. The last one corresponds to the largest value of n such that ...

  6n -2 ≤ 1000

  6n ≤ 1002

  n ≤ 167

That is, 167 even numbers will also be excluded.

__

The third sequence starts at 1 and has a common difference of 4. Every number in this sequence is also a number in the first sequence.

__

So the numbers in these sequences include all 500 odd numbers and 167 even numbers, for a total of 667 numbers. The probability that a randomly chosen number is not in one of these sequences is ...

  (1000 -667)/(1000) = 333/1000 = 0.333 . . . . p(not a sequence term)

8 0
3 years ago
I need to know how to do this
kiruha [24]
1) 2
2) 3
3) 4
4) 7
Hope this helps ^-^
5 0
3 years ago
A point is chosen in the circle at random. Determine which of the statements are true. Check all that apply. It is unlikely the
Natali [406]

Answer:

A,D,E

Step-by-step explanation:

I just took the quiz.

4 0
2 years ago
Read 2 more answers
Other questions:
  • The silver bar is 15cm long. The bar is melted and the silver is then made into a cuboid. The base of the cuboid is 10cm by 10 c
    12·1 answer
  • Which pair of numbers have a greatest common factor of 2?
    14·1 answer
  • A square has a perimeter of 36 millimeters. What is the area of the square?
    11·2 answers
  • The 7-digit numbers 74A52B1 and 326AB4C are each multiples of 3. Which of the following could be the value C?
    7·1 answer
  • Answer asapppppppppp
    12·2 answers
  • Radical expression for the exponential expression above
    8·2 answers
  • Ron took a photograph of his car and then measured the length of the car in the photograph. The length was 4 1/2 inches. If the
    9·1 answer
  • PLEASE HELP PLEASE 3. Which rule best describes this transformation?
    12·1 answer
  • Is y=0.3x proportional
    10·2 answers
  • HELPPPPP NO LINKS PLEASEEEE
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!