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quester [9]
2 years ago
8

A researcher has noted that the repair times of a sample of 15 new lawn mowers has a standard deviation of 4 minutes. A 95% conf

idence interval estimate for the variance of service times for all its new lawn mowers is:_______
a) 8.58 to 39.79
b) 1.64 to 1.96
c) 4 to 16
d) 4 to 15
Mathematics
1 answer:
mamaluj [8]2 years ago
4 0
Answer: C
Hope this helped
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Express each rate as a unit rate. 720 miles traveled on 60 gallons of gasoline=
Brut [27]
720 miles traveled on 60 gallons of gasoline.
Express this on its Unit Rate.
To get the answer, we need to divide 720 miles by 60 gallons of gasoline
=> 720 / 60 = 12 miles /gallons
Thus, in every 1 gallon of gasoline, you can travel 12 miles.
So, the expression would be like this:
720 miles / 60 gallons = 12 miles / gallon
Let’s check our answer
=> 12 miles x 60 gallons = 720 miles.
Thus, we got the correct answer.



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3 years ago
Please help anyone know how to do this.
dexar [7]

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3 years ago
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Simplify -3(2x-4)+8x-8
ryzh [129]
-3(2x-4)+8x-8
-6x+12+8x-8
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3 years ago
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Type the correct answer in the box. Write the standard form of the quadratic equation modeled by the points shown in the table b
White raven [17]
Y =ax² + bx +c

1) Point (0,7)

7 = a*0² +b*0 +c
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5) a+b= - 3
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8 0
2 years ago
Select all the correct answers. Which of these pairs of functions are inverse functions?
erica [24]

Answer:

D

Step-by-step explanation:

an inverse function is a function that reverses another function for ex. if f(x)=y and g(y)=x.

3 0
3 years ago
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