HELP ASAP PLEASE THIS QUESTION IS ABOUT FUNCTIONS SO IF U KNOW HOW TO DO FUNCTIONS PLEASE HELP I HAVE ASKED THIS LIKE MAYBE 4 TI
MESSSSS :(
ALSO DONT PUT A RANDOM ANSWER AND TAKE THE POINTS I REALLY NEED HELP
ALSO DONT PUT A RANDOM ANSWER AND TAKE THE POINTS I REALLY NEED HELP
2 answers:
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Answer:
The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).
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
z is the zscore that has a pvalue of .
For this problem, we have that:
Sample of 421 new car buyers, 75 preferred foreign cars. So
85% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).
Answer:
Step-by-step explanation:
Given
See attachment for question
Required
Solve
We have:
Take LCM and solve
