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
lbvjy [14]
3 years ago
5

Please help me with this probability question.

Mathematics
1 answer:
Vikki [24]3 years ago
6 0

Answer:

1.6 please correct me if im wrong by commenting

Step-by-step explanation:

You might be interested in
The circles centered at points A, C, and D have radii of length AC.
natita [175]

it is the second one

Step-by-step explanation:

3 0
2 years ago
The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam
irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

4 0
3 years ago
What is the solution to the system of equations below?
sergij07 [2.7K]
D) because the first equation*3-the second equation*;
the left side=0, the right side = 36
6 0
3 years ago
Read 2 more answers
How many chicks hiding? Explain how you know.
Salsk061 [2.6K]
You can’t really answer this without showing us the the answer you got from item 6
8 0
3 years ago
Very easy answer but does any one know what C is
Pavel [41]
Answer: As the number of rides given by the taxi driver increased, the earnings of the taxi driver also increases.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Morgan uses a standard ruler to measure the length of a picture in inches. Which length is the only realistic measurement Morgan
    15·2 answers
  • Given a parent function y=x^3, write a function with the following transformations: right 3, up 2, dilated by a factor of 1/2.
    15·1 answer
  • A pizza shop offers 10 different toppings of pizzas. How many total 2-topping pizzas can be ordered?
    6·2 answers
  • If you toss a coin 4 times, what is the probability of landing heads, heads, tails, heads and then heads?
    14·2 answers
  • The sum of two numbers is 342. One of the numbers is 252. What is the other number?
    10·2 answers
  • PLACE THE PROPER OPERATION(S) TO MAKE A TRUE<br> STATEMENT: 8 4 2 15 = 49
    6·1 answer
  • A company manufactures tires at a cost of $40 each. The following are probabilities of defective tires in a given production run
    10·1 answer
  • Need help on this.....
    12·1 answer
  • Find the slope given 2 the points (-12, -2) and (-16, 4)
    12·1 answer
  • Need help quickly!!!!!!!!!!!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!