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
slava [35]
3 years ago
8

A quality control technican checked a sample of 30 bulbs. Two of the bulbs were defective. If the sample was representative, fin

d the number of bulbs expected to be defective in a case of 450.
Mathematics
1 answer:
masha68 [24]3 years ago
3 0

Answer:30

Step-by-step explanation: Put 30 times 15 into a calulater. Then do 15 times  2 then you find your answer.

You might be interested in
Suppose that 200 students are randomly selected from a local college campus to investigate the use of cell phones in classrooms.
serious [3.7K]

Answer:

It would change to 0.04802

Step-by-step explanation:

from this question we have that n became 400

40% of 400

= 160

p* = 160/400

= 0.4

1 - p* =

= 1 - 0.4

= 0.6

at confidence level,

1 - 0.95

= 0.05

alpha/2 = 0.025

z= 1.96

<u>margin of error. E</u>

= 1.96 x √[(0.4 x 0.6)/400]

= 1.96 x 0.0245

= 0.04802

M.E = 0.04802

6 0
3 years ago
What is the distance between point (7,9) and point (-2,7)
skad [1K]

Answer:

9.21954445729

Step-by-step explanation:

use distance formula

3 0
3 years ago
Which could be the entire interval over which the function,
Marrrta [24]

Answer:

(-2, 1)

Step-by-step explanation:

Hi Juliadayx! How are you?

Well, maybe you already heard about the domain and the range of a function.  

The domain is the set of values that the independent variable can take (usually referred to as the letter "x"), while the range is the set of values that the dependent variable takes, which is called f(x) or function of x.

In this case, the exercise asks you to evaluate for which values of “x” (right column of the table), the function “f(x)” takes positive values (left column of the table), the positive values also include zero. And in this case you can see that the function f(x) is only positive for the values of "x": -2, -1, 0 and 1. Therefore, the answer is the entire interval (-2, 1).

I hope I've been helpful!

Regards!

3 0
3 years ago
Giving brainliest GIVING BRAINLIEST PLEASE HELP QUICK ONLY RIGHT ANSWERS
Alona [7]
Here’s the answer w explanation :)

4 0
3 years ago
A company is selling two different size medicine balls to a local colleges athletic department. The ratio of the ball diameters
dybincka [34]

Answer:

D. 220,781.25 cm3

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Help 30 Points! Show ALL Work! Image Attached.
    14·1 answer
  • Andrea ran 400 meters in gym class How many cm. did she run
    7·1 answer
  • Identify a possible first step using the elimination method to solve the system and then find the solution to the system. 3x - 5
    13·1 answer
  • 7(r-5)-3=r+34 what is the answer
    9·1 answer
  • PLEASE HELP<br> Find the length of the missing side.
    15·1 answer
  • there are 32 students in the school play. the ratio of girls to all students in the play is 5:8. how many girls are in the play?
    14·2 answers
  • Devontae and three of his friends drive the Pennsylvania Turnpike from Ohio to New Jersey. If they split the $47.00 toll equally
    8·1 answer
  • An athletic club charges a monthly membership
    15·1 answer
  • The growth of bacteria is modeled as P = P0ert. In a sample culture, the bacteria grows at a rate of 6 percent per minute. If th
    9·1 answer
  • In the diagram below, AB and TC are tangent to 0. Which equation could be solved to find x, the measure of AC?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!