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Lelechka [254]
3 years ago
7

A number cube has faces labeled 1-6. What is the probability of rolling a 4 on the number cube and landing on a 2 on this spinne

r?
A.2/6
B.3/6
C.2/36
D.3/36

Mathematics
1 answer:
Lunna [17]3 years ago
6 0
I think its A once again i THINK its A sorry if im wrong 
 
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The mean waiting time at the drive-through of a fast-food restaurant from the time the food is ordered to when it is received is
alexira [117]

Answer:

a) And if we replace we got: \bar X= 78

s = 15.391

b) 78-3.25\frac{15.391}{\sqrt{10}}=62.182    

78-3.25\frac{15.391}{\sqrt{10}}=93.818    

So on this case the 99% confidence interval would be given by (62.182;93.818)    

Step-by-step explanation:

Dataset given: 109 67 58 76 65 80 96 86 71 72

Part a

For this case we can calculate the sample mean with the following formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And if we replace we got: \bar X= 78

And the deviation is given by:

s =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And if we replace we got s = 15.391

Part b

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=10-1=9

Since the Confidence is 0.99 or 99%, the value of \alpha=0.01 and \alpha/2 =0.005, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,9)".And we see that t_{\alpha/2}=3.25

Now we have everything in order to replace into formula (1):

78-3.25\frac{15.391}{\sqrt{10}}=62.182    

78-3.25\frac{15.391}{\sqrt{10}}=93.818    

So on this case the 99% confidence interval would be given by (62.182;93.818)    

8 0
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A nearby school for wizardry is larger. They have 14 times as many students.
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Answer:

14 times more than the larger school

Step-by-step explanation: This makes no sense, there is no problem to solve, just a statement

 

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Answer:

A.louis drive a chevolet

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from the question three different people drive different cars . since two out of the three people has been excluded from driving a particular car i.e the third person is the one driving Chevrolet

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3 years ago
Which of the following are written in point-slope
tino4ka555 [31]
If I get a thanks I’ll answer on a diff comment
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Simplify the following expression
Kay [80]

Answer:

\frac{98p^{6}}{q}

Step-by-step explanation:

Distribute the exponents

(\frac{(7^{-2}p^{-6}q^{-8})}{2q^{-9}} )^{-1}

(\frac{q}{98p^{6}} )^{-1}

Distribute the -1

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