Answer:
The minimum sample size needed is  . If n is a decimal number, it is rounded up to the next integer.
. If n is a decimal number, it is rounded up to the next integer.  is the standard deviation of the population.
 is the standard deviation of the population.
Step-by-step explanation:
We have that to find our  level, that is the subtraction of 1 by the confidence interval divided by 2. So:
 level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Z-table as such z has a p-value of  .
.
That is z with a pvalue of  , so Z = 1.645.
, so Z = 1.645.
Now, find the margin of error M as such

In which  is the standard deviation of the population and n is the size of the sample.
 is the standard deviation of the population and n is the size of the sample.
How large a sample must she select if she desires to be 90% confident that her estimate is within 4 ounces of the true mean?
A sample of n is needed, and n is found when M = 4. So






The minimum sample size needed is  . If n is a decimal number, it is rounded up to the next integer.
. If n is a decimal number, it is rounded up to the next integer.  is the standard deviation of the population.
 is the standard deviation of the population.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
The slope of negative one means it is the opposite of a positive graph and the overall value is decreasing. The origin is (0,0)
 
        
             
        
        
        
The answer is A) 2/3 ^ 4 power 
 
        
             
        
        
        
Answer:
The answer to your question is: letter C
Step-by-step explanation:
Multiplicative inverse is a pair of numbers which product gives 1.
Then
x will be our number
                      -9x = 1
                         x = - 1/9
because 
                     -9 x   =
 =  = 1
 = 1
 
        
             
        
        
        
The value that could replace variable x in the table is (15 - m)8
<h3 /><h3>How to the value of x in an expression ?</h3>
The students are given 3 minutes to complete each multiple choice question on a test and 8 minutes for each free response question. 
From the table, the time to answer the whole multiple choice question is as follows:
total time = 3m
From the table, the total time taken to answer the free response question is as follows:
total time = (15 - m)8
learn more on variable here: brainly.com/question/12798965
#SPJ1