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
cupoosta [38]
3 years ago
6

The time it takes Jessica to bicycle to school is normally distributed with mean 15 minutes and variance 4. Jessica has to be at

school at 8:00 am. Suppose you saw her at class, and she said it took her 23 minutes to get to school that day. Which of the following is a reasonable inference or conclusion?a. Twenty-three minutes to school is not an unusually long commute time.b. A commuting time of 23 minutes is highly unusual or atypical.c. The distribution of commute times MAY NOT be normal with mean 15 minutes and standard deviation 2 minutes.d. Both (b) and (c) are feasible conclusions.e. Both (a) and (c) are feasible conclusions.
Mathematics
1 answer:
exis [7]3 years ago
4 0

Answer:

d. Both (b) and (c) are feasible conclusions

Step-by-step explanation:

Given that the time  it takes Jessica to bicycle to school is normally distributed with mean 15 minutes and variance 4.

i.e. X the time it takes for Jessica to reach school is N(15,2)

One day Jessica said it took 23 minutes to get to school

i.e. 4 std deviations above the mean time it took

the prob for this is almost 0 which is very unusual.

Either the distribution is not symmetric as mentioned normal or the time is unusual

Hence correct option woul dbe

b. A commuting time of 23 minutes is highly unusual or atypical. and

c. The distribution of commute times MAY NOT be normal with mean 15 minutes and standard deviation 2 minutes

So both b and c are feasible conclusions

You might be interested in
The water level in Noah's water tank is 72 inches high. Noah begins to drain a water tank by opening a valve. The water drains a
stepan [7]
So, Noah would most likely have - wait hold up what's the main question?is it how much Noah has? if it is I will be able to solve it. Or is it how much water will fill it or something?
3 0
3 years ago
If ABCDE is translated 7 units to the right and 2 units up, what will happen to the polygon?
Natali [406]
It will move but won't change shape or size.
6 0
2 years ago
9/10 - 3/14_______ps in simplest form
neonofarm [45]
9/19 - 3/14
= 126/140 - 57/140
= 69/140
3 0
2 years ago
help me do pls.If u don't know how to do,pls don't do or else u will be reported.I need it under 25 min thank u <3​
nevsk [136]
F is proportional to 1/x^2
distance = x
A reduction of 25 percent = 0.75x
Let’s put this in place of x
F = 1/(0.75x)^2
And simplify
F = 1/0.5625x^2

So you need to find the percentage increase from 1/x^2 to 1/0.5625x^2

So what does 1/x^2 multiply by to give 1/0.5625x^2

Written as an equation it is y/x^2 = 1/0.5625x^2
Multiply both sides by x^2
y = 1/0.5625
y = 1.778 (rounded to 3 decimal points)

So the decimal multiplier is 1.778 and so the percent increase is approximately 77.8%
8 0
2 years ago
Find the distance between the points (3,0) and (-1,-5)
nadya68 [22]

Answer:

6.4

Step-by-step explanation:

distance formula \sqrt{(x2-x1)^2+(y2-y1)^2}

\sqrt{(-1-3)^2+(-5-0)^2}

\sqrt{(-4)^2+(-5)^2}

\sqrt{16+25}

\sqrt{41}≈6.403.......

ik it doesnt make any sinse but hope this helps

7 0
3 years ago
Other questions:
  • What is the middle term of the product of (x + 5)(x + 2)?<br><br> 7x<br> 10x<br> 18x
    13·2 answers
  • 8y-10=-3y+2 what does that equal?
    8·2 answers
  • Can someone help me understand this?
    15·1 answer
  • What is (12 ➗ 3 + 4) - (4 squared - 6 x 2)?
    7·1 answer
  • Write the slope of the line containing each pair of points.
    14·1 answer
  • For each equation, determine if x=2 is a solution.
    9·1 answer
  • The following Circle Graph and table show the result of the survey conducted by Twin Groves Ice Cream parlor to find out the mos
    12·1 answer
  • What is the image of (2,3)(2,3) after a reflection over the line y=-xy=−x?
    8·2 answers
  • Find the missing side round your answer to the nearest tenth
    6·1 answer
  • Explain how to write and evaluate the algebraic expression 13 less than the quotient of forty and a number; evaluate when n=2
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!