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
jenyasd209 [6]
2 years ago
12

Choose all that are correct

Mathematics
1 answer:
iren [92.7K]2 years ago
3 0

Answer:

Step-by-step explanation:

The number of defective laptops = 6/145 * 100 as a percent.

The number of defective laptops = 4.13% in a sample of 145

A: False. The percentage should be the same for 290 laptops. The % does not change. The number of defective laptops will change (12)

B: True. It is a reason assertion that about 4% of all laptops will be defective.

C: True. It is not reasonable to assume that only 0.5 laptops will be defective. .5% is too small.

D: True. 10% is too high.

E: False. The variation should not be much.

You might be interested in
Suppose the heights of women at a college are approximately Normally distributed with a mean of 65 inches and a population stand
Zigmanuir [339]

Answer:

Step-by-step explanation:

Hello!

The variable of interest, X: height of women at a college, has an approximately normal distribution with mean μ= 65 inches and standard deviation σ= 1.5 inches.

You need to look for the value of height that marks the bottom 20% of the distribution, i.e. the height at the 20th percentile of the normal curve, symbolically:

P(X≤x₀)= 0.20

To know what value of height belongs to the 20% of the distribution, you have to work using the standard normal distribution and then reverse the standardization with the population mean and standard deviation to reach the value of X. So the first step is to look for the Z-value that accumulates 20% of the distribution:

P(Z≤z₀)=0.20

z₀= -0.842

z₀= (x₀-μ)/σ

z₀*σ= (x₀-μ)

x₀= (z₀*σ)+μ

x₀= (-0.842*1.5)+65

x₀= 63.737 inches

I hope it helps!

6 0
3 years ago
Read 2 more answers
What is the x-coordinate of the point that divides the directed line segment from J to K into a ratio of 2:5?
Marianna [84]

Answer:

Second option is correct. The x-coordinate of the point that divides the directed line segment from J to K into a ratio of 2:5 is -2.

Step-by-step explanation:

From the given graph  it is noticed that the endpoints of the line segment JK are J(-6,-2) and K(8,-9).

The formula to find x intercept.

x=\frac{m}{m+n}(x_2-x_1)+x_1

The ratio is 2:5, therefore the value of m is 2 and the value of n is 5.

x=\frac{2}{2+5}(8-(-6))+(-6)

x=\frac{2}{7}(14)-6

x=4-6

x=-2

Therefore the x-coordinate is -2 and second option is correct.

6 0
2 years ago
Read 2 more answers
? 6) 7x2 - 7x<br> someone tell me the answerrrr
yarga [219]

Answer:

7x(x−1)

Step-by-step explanation:

7 0
2 years ago
So, the square root of 72 lies between the numbers which The number 72 lies between the perfect squares means the square root of
Contact [7]

Answer: 64 and 81

Step-by-step explanation: I used my brain. :)

8 0
2 years ago
Read 2 more answers
Equivalent to y-0.32y
larisa86 [58]
Y-0.32y  if you factor you would see:

y(1-0.32)

y(0.68) so

0.68y  or even 68y/100=17y/25  are equivalent....
3 0
2 years ago
Other questions:
  • How to round to the nearest tenth
    5·2 answers
  • It costs $3.45 to buy 3/ 4 lb of chopped walnuts. How much would it cost to purchase 7.5 lbs of walnuts?
    12·2 answers
  • A student writes an incorrect step while checking if the sum of the measures of the two remote interior angles of triangle ABC b
    12·1 answer
  • Evaluate each expression when a=1/3, b= 4 and c = 9
    5·1 answer
  • A new photocopier works 4 times as fast as an old one. When the machines work together, a university can produce all its staff m
    9·1 answer
  • How many real roots does the function f(x)=x^2+8x-2
    8·2 answers
  • Kimberly drives at a rate of 50 miles per hour on her trip across the country. If it takes Kimberly 200 gallons of gasoline to d
    5·1 answer
  • Whats 1/3 of 2/4
    9·1 answer
  • What is the value of the expression −9 x 2.2?
    11·2 answers
  • Taylie wishes to advertise her business so she gives packs of 10 red flyers to each restaurant owner and sets of 8 blue flyers t
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!