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yKpoI14uk [10]
3 years ago
9

Hey lads could you please check out my channel on you.tube please leave a like and subscribe it would help a lot much love stay

safe and have a good day :) Channel: Garand man
( it should be the channel with 4 videos) :)
Mathematics
1 answer:
Simora [160]3 years ago
3 0
Yeah sure I definitely will!
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A major airline is concerned that the waiting time for customers at its ticket counter may be exceeding its target average of 19
sertanlavr [38]

Answer:

a) Statement is true

b) Statement incorrect. Company goal is to attend customer at 190 second at the most. So test should be one tail test  (right)

c) We have to reject H₀, and differences between sample mean and the hypothesized population mean should not be attributed only to sampling error

Step-by-step explanation:

a)  as the significance level is = 0,02  that means  α = 0,02 (the chance of error type I )  and the β (chance of type error II   is

1  -  0.02  =  0,98

b) The company establishe in 190 seconds time for customer at its ticket counter (if this time is smaller is excellent ) company is concerned about bigger time because that could be an issue for customers. Therefore the test should be a one test-tail to the right

c) test statistic

Hypothesis test should be:

null hypothesis                H₀   =  190

alternative hypothesis    H₀   >  190

t(s)  =  ( μ  -  μ₀ ) / s/√n      ⇒   t(s)  = ( 202 - 190 )/(28/√100 )

t(s)  = 12*10/28

t(s)  = 4.286

That value is far away of any of the values found for 99 degree of fredom and between  α  ( 0,025 and 0,01 ). We have to reject H₀, and differences between sample mean and the hypothesized population mean should not be attributed only to sampling error

If we look table  t-student we will find that for 99 degree of freedom and α = 0.02.

3 0
3 years ago
41= 12d-7 solve for d
soldi70 [24.7K]

Answer:

d = 4

Step 1: Flip the equation.

Step 2: Add 7 to both sides.

Step 3: Divide both sides by 12.

4 0
2 years ago
HELP PLEASE
ohaa [14]

Answer:

I don't believe that it will be viable by the time i am a senior, because the USA is so in debt, and they are having enough trouble as it is, supporting today's retirees and seniors. I wish it would be viable, but it is highly unlikely the government will not be able to support it.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Solve for B.<br><br> A=3B+7C
Archy [21]

Hey there!!

Given:

... A=3B+7C

Subtracting 7C on both sides:

... A-7C=3B

Dividing by B on both sides:

... (A-7C)/3=B

<em>Hope my answer helps!</em>

6 0
3 years ago
How does the graph of g(x) = (x + 4)3 − 6 compare to the parent function f(x) = x3?
Solnce55 [7]

Answer:

g(x) is shifted 6 units to the left

Step-by-step explanation:

Lets try to simplify g(x) since has a few extra terms:

g(x)= 3x+12-6=3x+6

Now it is easier to compare the two functions.

We can tell that they both have the same slope, both differs on a extra term

This term tell us that the g(x) is shifted to the left (it is positive 6)

Another approach to the solution is to plot the two functions together by obtaining the crossing points with the 'y' axis and with the 'x' axis

the result is shown in the attached picture

4 0
3 years ago
Read 2 more answers
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