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
Jet001 [13]
3 years ago
6

A relay microchip in a telecommunications satellite has a life expectancy that follows a normal distribution with a mean of 93 m

onths and a standard deviation of 3.8 months. When this computer-relay microchip malfunctions, the entire satellite is useless. A large London insurance company is going to insure the satellite for 50 million dollars. Assume that the only part of the satellite in question is the microchip. All other components will work indefinitely.
(a) For how many months should the satellite be insured to be 96% confident that it will last beyond the insurance date?
Mathematics
1 answer:
aliina [53]3 years ago
4 0
The insurance period must be chosen so that the probability of a microchip failure within that period is 4%. Reference to a standard normal distribution table shows that the z-score for a cumulative probability of 4% is -1.75.
Let the insurance period be X months:
-1.75 = (X - 93)/3.8
-6.65 = X - 93
X = 83.35 months.
The answer is 83.35 months.

You might be interested in
Hey friends answer this please <br> Please give the letter choice
Aliun [14]

1.2\cdot 10^{-3}-2.0\cdot 10^{-4}=1.2\cdot 10^{-3}-0.20\cdot 10^{-3}\\\\=1.0\cdot 10^{-3}

The appropriate choice is ...

... D) 1.0×10⁻³ inch

8 0
3 years ago
I need help I'm stuck ?
likoan [24]

v =  \frac{4}{3}  \times \pi \times  ({ \frac{8}{2} })^{3}  \\

v =  \frac{4}{3}  \times 3 \times  {4}^{3}  \\

v =  {4}^{4}

v =  {2}^{8}

v = 256 \:  \:  {cm}^{3}

7 0
2 years ago
Use the diagram that awnser the questions.
CaHeK987 [17]
Part A
 The first thing we must do in this case is to hide the slopes of each line.
 line m:
 m = (- 4-3) / (0 - (- 4))
 m = -7 / 4
 Line n:
 n = (- 2-2) / (3-1)
 n = -4 / 2
 n = -2
 Answer:
 Lines m and n are not parallel because their slopes are different.

 Part B:
 
We look for the slope of the K line:
 k = (1 - (- 3)) / (4 - (- 3))
 k = 4/7
 We observe that it is true that:
 k = -1 / m
 Answer: 
 The lines are perpendicular.
8 0
3 years ago
Read 2 more answers
If x represents a number, then write an expression for one half the sum of x and 7.
Lostsunrise [7]

Answer:

1/2(x+7)

Step-by-step explanation:

4 0
3 years ago
Select ALL the correct answers.
DaniilM [7]
Be:
Number of hours: n

<span>The cost of renting a bike for the first hour is $7:
n=1→f(n)=f(1)=$7

</span>He is charged $2.50 for every additional hour of renting the bike:
f(n)=f(n-1)+2.50, for <span>n ≥ 2
</span>
f(1)=7; f(n)=f(n-1)+2.50, for <span>n ≥ 2 (sixth option)
</span>
f(n)=f(1)+2.50(n-1)
f(n)=7+2.50(n-1)
f(n)=7+2.50n-2.50
f(n)=2.50n+4.50 (fifth option)

Answers:
Fifth option: f(n)=2.50n+4.50, and
Sixth option: f(1)=7; f(n)=f(n-1)+2.50, for <span>n ≥ 2</span>
7 0
3 years ago
Other questions:
  • Help me solve this pleasee
    7·1 answer
  • What is the volume of a sphere with a radius of 6 inches?
    6·2 answers
  • 75 mi/hr = how many ft/sec
    14·1 answer
  • Amaya used these steps to solve the equation 8x+4=9+4(2x−1). Which choice describes the meaning of her result, 4=5?
    9·2 answers
  • Dave has $11 to spend on a $4 book and two birthday cards (c) for his friends. How much can he spend on each card if he buys the
    15·1 answer
  • Double bubble/ triple 100 points !!!!!!
    14·2 answers
  • Help meeee plz I don’t get it
    15·1 answer
  • What is the value of x in the equation Three-fifths x = negative 45?
    9·1 answer
  • BASEBALL John had 30 baseball cards.
    6·2 answers
  • PLEASE HELP I ONLY HAVE 12 MINUTES!! The pendulum of the grandfather clock shown below swings at a maximum angle of 25 degrees.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!