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
vivado [14]
3 years ago
6

Et one factory the ratio of defective bulbs produced to the total light bulbs produced is 3:500. How many light bulbs are expect

ed to be defective when 12,000 are produced?
Mathematics
1 answer:
In-s [12.5K]3 years ago
8 0

The answer is:

3 : 500 = x : 12000

x = (3*12000)/500

x = 36000/500

x = 72

72 light bulbs are expected to be defective when 12000 are produced.

You might be interested in
How do you solve | -23.12 + .2361 | + 31.876 ?
anzhelika [568]

Answer:

54.7599

Step-by-step explanation:

4 0
3 years ago
Sarah’s neighbor offers to pay her $5 for every shark tooth she finds on the beach. After collecting only three shark’s teeth, S
nalin [4]

o o o oh here we go walking talking like a

Step-by-step explanation:

  1. lol
  2. 852x2 \leqslant 5y6\%
8 0
3 years ago
The average yield of the standard variety off soybeans per acre on a farm in a region is 48.8 bushels per acre, with a standard
I am Lyosha [343]

Answer:

z=\frac{53.4-48.8}{\frac{12}{\sqrt{36}}}=2.3  

p_v =P(Z>2.3)=1-P(Z  

If we compare the p value and the significance level given \alpha=0.01 we see that p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, so we can conclude that the true mean is not significantly higher than 48.8 at 1% of signficance.  

Step-by-step explanation:

1) Data given and notation  

\bar X=53.4 represent the sample mean

\sigma=12 represent the population standard deviation assumed

n=36 sample size  

\mu_o =48.8 represent the value that we want to test  

\alpha=0.01 represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

2) State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean is higher than 48.8, the system of hypothesis would be:  

Null hypothesis:\mu \leq 48  

Alternative hypothesis:\mu > 48  

Since we assume that know the population deviation, is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

3) Calculate the statistic  

We can replace in formula (1) the info given like this:  

z=\frac{53.4-48.8}{\frac{12}{\sqrt{36}}}=2.3  

4)P-value  

Since is a right tailed test the p value would be:  

p_v =P(Z>2.3)=1-P(Z  

5) Conclusion  

If we compare the p value and the significance level given \alpha=0.01 we see that p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, so we can conclude that the true mean is not significantly higher than 48.8 at 1% of signficance.  

3 0
3 years ago
Pls help I really don’t understand I’ll be thankful thanks and no links
inysia [295]

Answer:

A: Right

B: Acute

C: Obtuse

D: Acute

Step-by-step explanation:

A: Right

(90 degrees)

B: Acute

(less than 90)

C: Obtuse

(over 90 degrees)

D:  Acute

(less than 90)

6 0
3 years ago
Lindsey completed a 30 point assignment. she eared 21 points what percent did she earn?
lana66690 [7]

Answer:

Lindsey got 70% on this assignment.

Step-by-step explanation:

21 divided by 30 equals 0.7 which is 70% in percent form.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest
    15·1 answer
  • PLEASE HELP IM STUCK...<br> How do you find the length of CD?
    11·2 answers
  • What is the least common multiple of 6 and 8?
    11·2 answers
  • Help me?? Anyone I'll vote brainliest and everything 5 stars!! :)
    7·1 answer
  • Which best explains why the equation 4x + 5 = 4x - 1 has no solutions? A. The equation has a variable on both sides. B. The equa
    9·2 answers
  • HELP!! URGENT!! 75 POINTS + BRAINLIEST!!
    8·1 answer
  • In a survey of 232 students, about 5.5% have attended more than one play. Which is closest to the number of students in the surv
    5·1 answer
  • Find the value for x
    14·1 answer
  • HELP IM FAILING pls if u get this right i can pass
    9·1 answer
  • 50 POINTS!!!There were 50 questions on Vince's math test. He answered 45 questions correctly. What percent of the questions did
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!