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damaskus [11]
3 years ago
15

I need to know what is in the blank space ?

Mathematics
1 answer:
Ber [7]3 years ago
7 0
There is nothing in the space. If there were, then the space would not be blank.
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The time needed for all college students to complete a certain paper-and-pencil maze follows a normal distribution with a popula
oee [108]

Answer:

The correct option is a

Step-by-step explanation:

From the question we are told that

   The population mean is  \mu = 30\ seconds

    The standard deviation is  \sigma = 3 \ seconds

     The sample size is  n  = 9

    The null hypothesis is H_o: \mu  = 30

     The alternative hypothesis is  H_a  :  \mu \ne 30

    The level of significance is  \alpha = 0.01

    The sample mean is  \= x = 31.2

Generally the test statistics is mathematically represented as

      z = \frac{ \= x - \mu }{ \frac{\sigma}{\sqrt{n} } }

=>   z = \frac{ 31.2 - 30}{ \frac{3}{\sqrt{9} } }

=>   z = 1.2

From the z table  the area under the normal curve to the right corresponding to  1.2  is    

         P(Z >  1.2) =  0.11507

Generally the p-value is mathematically represented as

         p-value = 2 * P(Z >  1.2)

=>       p-value = 2 *0.11507

=>       p-value = 0.230

From the value obtained w can see that

         p-value  > \alpha hence

The decision rule is  

Fail to reject the null hypothesis

The conclusion is there is not enough evidence to support the claim

6 0
3 years ago
PLZ HELP ILL GIVE BRAINLIEST I HAVE AN F IN MATH
kumpel [21]

the answer is 144,36,9

5 0
3 years ago
Determine whether the events are independent or dependent: rolling a number cube and tossing a coin
kirill115 [55]
Its independent because it does not depend on the answer before
5 0
3 years ago
If f(x) = x+2 and g(x) = radical x-9, find g(f(x)).
xxMikexx [17]

Answer:

second option

Step-by-step explanation:

Substitute x = f(x) into g(x) , that is

g(f(x))

= g(x + 2)

= \sqrt{x+2-9}

= \sqrt{x-7}

6 0
3 years ago
Which side lengths form a right triangle?
Elanso [62]

It has to be 30,40,50

Due to Pythagoras Theron it suggests that longer sides is a*2 and b*2 and 30 and 40 square is 2500

2500 square is 50 meaning it makes this statement true

All others are wrong

3 0
3 years ago
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