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Umnica [9.8K]
3 years ago
6

A restaurant chain wants to change their oil from peanut oil to canola oil in order to save money. However, the restaurant wants

to survey their customers to see which oil they prefer. For one month, the restaurant serves food cooked in peanut oil and for the next month they serve food cooked with canola oil. Surveys are sent out with guests which ask to rate their fried food on a scale of 1 to 7. The results of the returned surveys are given below. Is there enough evidence to conclude that there is no difference in the satisfaction level of the customer? Use a level of significance of 2%.
Peanut Oil Canola Oil
n1 = 108 n2 = 87
x⎯⎯1x¯1 x⎯⎯2x¯2
s1 = 2.25 s2 = 3.18

1. What is the p-value for this hypothesis test? Round your answer to four decimal places.

In tests of a computer component, it is found that the mean time between failures is 937 hours. A modification is made which is supposed to increase reliability by increasing the time between failures. Tests on a sample of 36 modified components produce a mean time between failures of 960 hours, with a standard deviation of 52 hours. Is there enough evidence to support the claim that, on average, the modified components last longer than 937 hours between failures? Use a level of significance of 5%.

2. What is the p-value for this hypothesis test? Round your answer to four decimal places.
Mathematics
1 answer:
yulyashka [42]3 years ago
3 0

Answer:

yes

Step-by-step explanation:

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False

I hope this helps!

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Needs to be turned in soon pls help!!​
zhuklara [117]

Answer:

Step-by-step explanation:

12\sqrt{11}=\sqrt{11*12*12}\\\\=\sqrt{1584}

6 0
3 years ago
Can someone please explain
ankoles [38]
Start by defining variables (things you don't know). Let's make:
t = number of true/false questions
m = number of multiple choice questions

Equation #1
total questions on the test (given to be 20) is then:
t + m = 20

Equation #2
Multiply the number of questions by the points it's worth to get the total points
3t + 11m = 100

Now, you can use substitution to combine the two equations.

t + m = 20
by subtracting m from both sides, equation 1# becomes..
t = 20 - m

substitute t for 20 - m in the second equation.
3(20 - m) + 11m = 100

Solve for m.
3(20 - m) + 11m = 100
60 - 3m + 11m = 100
8m = 100 - 60
8m = 40
m = 5

There are 5 multiple choice questions on the test.
Now use this to find t.
t + m = 20 
t + 5 = 20
t = 20 - 5
t = 15

there are 15 true/false questions on the test.
7 0
3 years ago
A basketball player makes 6 of 10 free throws in the first week of the season. If she shoots with the same accuracy for the next
Alex777 [14]

Answer:

15

Step-by-step explanation:

First divide: 6/10 ( to get a rate)

Next multiply: 25*0.6

Final answer: 15

5 0
3 years ago
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