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
pantera1 [17]
3 years ago
5

In a study of the accuracy of fast food​ drive-through orders, one restaurant had orders that were not accurate among orders obs

erved. Use a significance level to test the claim that the rate of inaccurate orders is equal to​ 10%. Does the accuracy rate appear to be​ acceptable?
Identify the null and alternative hypotheses for this test.
Mathematics
1 answer:
Evgesh-ka [11]3 years ago
3 0

Answer:Null hypothesis:  

Alternative hypothesis:  

 

 

The p value obtained was a very high value and using the significance level given  we have  so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the proportion of orders that were not accurate is not significant different from 0.1 or 10% .  

and the accuracy of the test yes is acceptable since the p value obtained is large enough to fail to reject the null hypothesis

Step-by-step explanation:

Data given and notation n  

n=367 represent the random sample taken

X=32 represent the orders that were not accurate

estimated proportion of orders that were not accurate

is the value that we want to test

represent the significance level

Confidence=95% or 0.95

z would represent the statistic (variable of interest)

 

Alternative hypothesis:  

When we conduct a proportion test we need to use the z statisitc, and the is given by:  

(1)  

The One-Sample Proportion Test is used to assess whether a population proportion  is significantly different from a hypothesized value .

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

 

Statistical decision  

It's important to refresh the p value method or p value approach . "This methos is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The significance level provided . The next step would be calculate the p value for this test.  

Since is a bilateral test the p value would be:  

 

So the p value obtained was a very high value and using the significance level given  we have  so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the proportion of orders that were not accurate is not significant different from 0.1 or 10% .  

You might be interested in
When cai traveled from new orleans to the ozark mountains in arkansas the elevation changed from 7ft below sea level to 2,314 ft
Tanya [424]

Answer:

2321 ft.

Step-by-step explanation:

When Cai traveled from New Orleans to the Ozark Mountains in Arkansas the elevation changes from 7 ft below sea level to 2314 ft above sea level.

If we consider the elevation below sea level as negative and the elevation above sea level as positive, then the elevation changes from - 7ft to +2314 ft.

Therefore, the increment of elevation is by [2314 - (- 7)] = 2321 ft. (Answer)

7 0
3 years ago
Peggy wants to make 26
tekilochka [14]
If there are 26 bags EACH costing $9 then you would use equation A. 
26 (The number of gift bags) x the price of each bag would cost close to $234. That would be the reasonable estimate and I hope this helps!
6 0
3 years ago
How do i do this, im really confused and idk how to do it at this point
nalin [4]

Answer:

You do Thisbe

Step-by-step explanation:

7 0
3 years ago
What is 65% written as a decimal?<br> A. 0.065<br> B. 0.65<br> C. 6.5<br> D. 65
MrRa [10]

Answer:

b.0.65

Step-by-step explanation:

i think it is I'm sorry if it's not

6 0
3 years ago
Read 2 more answers
Some help please? 20 points !!
drek231 [11]

Answer:

72m^3

Step-by-step explanation:

l x w x h

l = 2

w = 9

h = 4

2 x 9 x 4 = 72

4 0
3 years ago
Read 2 more answers
Other questions:
  • Help please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11
    15·1 answer
  • mrs brown has 1/3 yd of blue denim and 1/2 yd of black demin. how many purses can be made using denim as the main fabric
    14·1 answer
  • Barry and his wife, Mary, have accumulated over $3.5 million during their 50 years of marriage. They have three children and fiv
    14·1 answer
  • Circumference or area how many times must a horse go around a horse walker to walk 1 mile
    5·1 answer
  • I need help on 12 and 13
    5·1 answer
  • Helen rolls a dice and flips a coin calculate the probibility that she gets a 4 and tails
    10·2 answers
  • Will give brainleist please. Help ±
    13·2 answers
  • How do you play chess?
    5·1 answer
  • What is 86+56+329+435+999+485+32+54?
    13·2 answers
  • Given f(x) = 3x – 1, solve for x when f(x) = -7.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!