Answer:
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
is the estimate
z is the zscore that has a pvalue of 
, also called the critical value.
The standard error is:
90% confidence level critical value
So 
, z is the value of Z that has a pvalue of 
, so 
.
Estimate:
72 petty theft cases and finds 45 of these have gone unsolved.
So 
Standard error:
Answer:
9/10 is equivalent to 90/100 and the answer under mine or above or the other answer should be reported. They got points for a question they did not answer correctly.
Answer:
E. 
.
Step-by-step explanation:
The solution of an absolute value function of the form 
represents the set of values of 
so that 
. The solution must be at least 
. Hence, the right choice is .
Answer:
3
Step-by-step explanation:
12÷4=3
Hope this will help you!
