Asked Nov 12, 2019

A study at Harvard found that 44% of their students binge drink.  You are at Princeton doing a similar study.  How many people do you need to interview to get your interval width down to 10 percentage points?  For a 95% CI, what is that sample size?  


Expert Answer

Step 1

According to the provided information, a study at Harvard found that 44% of their students binge drink. In order to calculate ...


Image Transcriptionclose

width for an interval width of 10%, margin of error 2 10 2 = 5% -0.05 margin of error (E) 95% CI critical (=) Estimated proportion(p): 0.05 1.96 0.44


Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in




Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Solve the problem. 13) The amount of snowfall falling in a certain mountain range is normally distri...

A: 13.It is mentioned that the amount of snowfall falling in a certain mountain range is normally distr...


Q: Suppose that you are offered the following "deal." You roll a six sided die. If you roll a 6, you wi...

A: a.The possible outcomes when rolling a die is {1, 2, 3, 4, 5 and 6}.The formula for finding probabil...


Q: What is an example of a statistical presentation ? Can you tell me what is it telling me ? What area...

A: In statisics, graphs are helpful in presenting the statistical data. In order to improve the present...


Q: Please show me how to do this equation

A: From the given information, the average sales value is 1.9 sales per week. Let the random variable X...


Q: Part d Step by step. TI 84 steps too. Thank you

A: To calculate t-value, it is required to follow below steps;click “2ND”click“VARS”( which is DISTR)cl...


Q: A consumer group is investigating a producer of diet meals to examine if its prepackaged meals actua...

A: The hypotheses are given below:


Q: Assume Z is a random variable with a standard normal distribution and c is a positive number. If P(Z...

A: Standard normal distribution:The standard normal distribution is a special case of normal distributi...


Q: The distribution of heights of adult men is approximately normal. A man whose standardized height is...

A: From the given information,Considering the heights of adult men is X which is normally distributed.T...


Q: 10.45 Construct a 95% confidence interval for p1 - P2 for the following 100, p81, n2= 150 , р2 %3D77...

A: Given data