Answer: Interval would be (0.29,0.58).
Step-by-step explanation:
Since we have given
n = Sample size = 54
Variance = 0.44
we need to find 98% confidence interval to estimate the variance.
So, we will use "Chi square distribution"
For this , we will find
df = n-1=54-1=53
Interval would be
similarly,
So, it becomes,
Hence, interval would be (0.29,0.58).
Answer:
165
Step-by-step explanation:
First, we multiply 50 and 2 to find out how much they traveled first, which is 100. And then, multiply 65 and 1 to get 65 for the second part. Add then, to get 165. Hope this helps!
Answer:
-50, +, 1, = -49. -25, +, 2, = -23. -10, +, 5, = -5. -5, +, 10, = 5
Step-by-step explanation:
So for this problem I went through multiples of 12 that ended in 6, because that's the only way that you would get a 6 at the end of the total. With that I found that he would have to buy 8 of 12 cent stamps and the rest (14) ten cents stamps.
Answer:
In this scenario you should use chefs if you have less than 55 people and you should use cece's if you have more than 55 people.
Step-by-step explanation:
To find out which one will be cheaper you need to know where they intersect, to do this you need to set up a system of equations.
y=28x+590 (chefs)
y=31x+425 (cece's)
to know where they intersect you need to make the y=0
28x+590=31x+425
Then solve
subtract the x from each side
590=3x+425
Subtract 425 from each side
3x=165
divide each side by three
x=55
now evaluate
Place a number above 55 (60 for example) into the place of x
28(60)+590=2,270
31(60)+425=2,285
In this scenario you should use chefs if you have less than 55 people and you should use cece's if you have more than 55 people.
