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
iren [92.7K]
4 years ago
10

Fluorescent light bulbs have lifetimes that follow a normal distribution, with an average life of 1,685 days and a standard devi

ation of 1,356 hours. In the production process the manufacturer draws random samples of 197 light bulbs and determines the mean lifetime of the sample. What is the standard deviation of the sampling distribution of this sample mean?
Mathematics
1 answer:
bearhunter [10]4 years ago
6 0

Answer:

3,238

Step-by-step explanation:

1,685+1,356+197=3,238

You might be interested in
(3x - 20°<br> (3x – 20)°<br> 4xº<br> 4xº<br> (3x – 20°<br> (3x – 20)<br> What is the value of x?
sergij07 [2.7K]

Step-by-step explanation:

<h3>this is given that the figure is a hexagon</h3><h3>let give a name to the given hexagon be ABCDEF</h3>

<h3>Angle a + B + C + D = 720 ( Ls sum pro. of hexagon)</h3><h3>3x-20+3x-20+4x+4x+3x-20+3x-20 = 720</h3><h3>3x+3x+3x+3x+4x+4x-20-20-20-20 = 720 (rearranging)</h3><h3>20x - 80 = 720</h3><h3>20x = 720 + 80 </h3><h3>x=800/20</h3>

<h2>x = 40 degrees </h2>

<h3>3x-20 = 100</h3><h3>4x = 160</h3>

<h2>I HOPE THAT THIS ANSWER HELPS YOU</h2>
8 0
3 years ago
Which set of angles are alternate interior angles
sweet-ann [11.9K]

Answer:

2&7

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
consider the gre scores for a random sample of 6 students out of a class of 25: name julia andrew jason cathy jessica robert sco
Thepotemich [5.8K]
Name  Score
Julia      650
Andrew 550
Jason    380
Cathy    720
Jessica 710
Robert   550

Point estimate for the mean score:
Sample mean = sum of all observations / number of observations

sample mean = (650+550+380+720+710+550) / 6
sample mean = 3560 / 6 
sample mean = 593.33

The point estimate for the mean score is 593.33
6 0
3 years ago
Mika's rosebush had 24 blooms in the first week of May. This was 80% as many blooms as Tammy's rosebush had during the same peri
Harrizon [31]
Tammy’s bush would have 30 blooms. 80% of 30 is 24.
7 0
3 years ago
What is the least number that rounds up to 300 when rounding to the nearest hundred?
anygoal [31]
Once you get to "5" you start rounding up, so the least would be 250.
5 0
4 years ago
Read 2 more answers
Other questions:
  • Please help :) ...........
    5·1 answer
  • Andrew makes 11 saves in 2 soccer games. He made 8 saves in the first game. How many saves did Andrew make in the second game?
    7·2 answers
  • Can anyone help me with this question and what the heck is it??
    12·1 answer
  • The cost of Barbara’s dinner is $15.90 including tax. She leaves a tip that is 18% of the total cost of the dinner. What is the
    14·1 answer
  • Please help me on this
    6·1 answer
  • Ellen's car averages 35 miles per gallon of gas. If you used equivalent ratios to graph her car's gas usage, how would the graph
    9·1 answer
  • Plzzzzzzzzzzzzzzzzzzzzzzzzzz help quick
    8·1 answer
  • Dave and Sandy Hartranft are frequent flyers with a particular airline. They often fly from City A to City B, a distance of 756
    15·1 answer
  • Which number, when substituted for x, make the equation 4x+ 8= 16 true
    7·2 answers
  • F(x) = -3x – 2<br> g(x) = 2x + 5<br> Find (f*g)(5)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!