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
algol13
3 years ago
7

Because of variability in the manufacturing process, the actual yielding point of a sample of mild steel subjected to increasing

stress will usually differ from the theoretical yielding point. Let p denote the true proportion of samples that yield before their theoretical yielding point. If on the basis of a sample it can be concluded that more than 20% of all specimens yield before the theoretical point, the production process will have to be modified.
(a) If 9 of 40 specimens yield before the theoretical point, what is the P-value when the appropriate test is used? (Round your answer to four decimal places.) P-value
Mathematics
1 answer:
photoshop1234 [79]3 years ago
4 0

Answer:

P-value ≈ 0.3463

Step-by-step explanation:

Hypothesis test would be

H_{0}:p=0.20

H_{a}:p>0.20

We need to calculate the z-score of sample proportion and then the corresponding P-value.

z-score can be calculated as:

z=\frac{p(s)-p}{\sqrt{\frac{p*(1-p)}{N} } } where

  • p(s) is the sample proportion of specimens yield before the theoretical point (\frac{9}{40}=0.225)
  • p is the proportion assumed under null hypothesis. (0.20)
  • N is the sample size (40)

Using the numbers

z=\frac{0.225-0.2}{\sqrt{\frac{0.2*0.8}{40} } } =0.3953

and the P-value is then P(z)≈0.3463

You might be interested in
Ill give brainlist to whoever helps me w this question
spayn [35]
The answer is C because multiplication comes first
7 0
2 years ago
Please answer this I will mark you Brainly if you answer this right
Rashid [163]

Answer:

150 This is right 4sure i did this test to.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Refer the homework helper what is the diffrence between the greatest green bean weight and the least green bean weight?
QveST [7]

Answer:

3/4 pounds

Step-by-step explanation:

Given the weights :

weight of beans 1/4 pound, 1/2 pound, 3/4. pound and 1 pound.​

Greatest weight = 1 pound

Least weight = 1/4 pound

Difference = greatest weight - Least weight

Difference = (1 - 1/4) pound

Difference in weight = 3/4 pounds

6 0
3 years ago
Alfred buys a car for £15225 which depreciates in value at a rate of 0.25% per year.
GaryK [48]

Answer:

14,590

Step-by-step explanation:

3 0
3 years ago
How do I find the area. Please explain
olganol [36]
All you have to do is multiply it then you get the answer
7 0
3 years ago
Other questions:
  • Write log10 10000 = 4 in exponential form
    9·1 answer
  • The next model of a sports car will cost 12.4% more than the current model costs 57,000. How much will the price increase in dol
    6·1 answer
  • 55 minutes to 4 hours write the ratio as a fraction in lowest terms answer
    8·1 answer
  • Help please!!!<br> (please show work)
    9·2 answers
  • Whats 0+0? i think its 1? i dont know please help me!!
    15·2 answers
  • Somebody please help me with this answer
    8·2 answers
  • Your challenge . . . Part 1: Your math class is celebrating McNugget Monday and needs to order 531 Chicken McNuggets. If they ar
    13·2 answers
  • A boat traveled 54 km with the stream and 42 km against the stream spending a total of as much time as it would spend while trav
    8·1 answer
  • Simplify.<br><br> (x2 - y2 - 3xy) + (7xy + 3x2)
    8·2 answers
  • Is 10, 20, 40, 80... an arithmetic sequence?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!