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Rudiy27
4 years ago
8

If a two-sided null hypothesis is rejected for a single mean at a given significance level, the corresponding one-sided null hyp

othesis (i.e., the same sample size, the same standard deviation, and the same mean) will ______________ be rejected at the same significance level.
Always
Sometimes
Never
Mathematics
1 answer:
maria [59]4 years ago
3 0

Answer:

my hypothesis is that the answer is on page 31 of Harry potter and the Prisoner of Azkaban, it'll be the 48th word. God speed old chum

Step-by-step explanation:

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a political candidate has asked you to conduct a poll to determine what percentage of people support her. if the candidate only
musickatia [10]

Answer:

The  sample needed is  n  =150

Step-by-step explanation:

From the question we are told that

   The margin of error is  E =  0.08

   The confidence level is  C  =  95 \% =  0.95

Given that the confidence level is  95% the level of significance is mathematically represented as

          \alpha  =  1 -  0.95

           \alpha  = 0.05

Next we obtain the critical value of  \frac{\alpha }{2} from the z-table , the value is Z_{\frac{\alpha }{2} } =  1.96

The reason we are obtaining critical value of    \frac{\alpha }{2} instead of    \alpha is because  

\alpha represents the area under the normal curve where the confidence level interval (   1-\alpha ) did not cover which include both the left and right tail while  

\frac{\alpha }{2} is just the area of one tail which what we required to calculate the margin of error

The sample size is mathematically represented as    

            n  =  [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \r p[1-\r p]

Here \r  p is sample proportion of people that supported her and we will assume this to be 50% =  0.5

So

            n  = [\frac{1.96}{ 0.08} ]^2 *  [0.5 (1- 0.5)]

           n  =150

           

8 0
3 years ago
Find the values of the variables in this kite.
zavuch27 [327]

Answer:

x=7, y=16

Step-by-step explanation:

2x+5=x+12

2x=x+7

x=7

y-4=x+5

y-4=12

y=16

4 0
4 years ago
How to solve the problem
morpeh [17]
Might be better if you typed the question
8 0
4 years ago
The height of the house is 26 feet. What is the height x<br> of each story?
SSSSS [86.1K]
I need to know how many storys there are in order to help you
7 0
3 years ago
Help!!
Soloha48 [4]

Answer:

equation is equal to this 1/2 (x + 6) =

A.1/2 • x + 3

B.2 • x + 3

C.1/2 • x + 6

D.(1/2 • x) + 3

Which expression is equivalent to the following expression: (There are 2 answers)

5.3 – y + 4.2

A.y - 9.5

B.–y + 9.5

C.9.5 – y

D.4.2 - y

E.5.5 + y + 4.2

Step-by-step explanation:

4 0
3 years ago
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