![miyayo](/avatars/9177.jpg)
miyayo
24.06.2020 •
Mathematics
In order to understand reasons why consumers visit their store, a local business conducts a survey by asking the next 100 people who visit their store to fill out a short survey. The business finds that 40 of the 100 people state that the main reason they visited the store was because the store is running a sale on coats that week. A confidence interval is constructed for the population proportion of consumers who would visit the store because of the coat sale. Which confidence interval would be the narrowest?
a. 90%
b. 99%
c. 95%
d. 85%
Solved
Show answers
More tips
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
Answers on questions: Mathematics
- M Mathematics Need help asap! The distance on a map is 3 centimeters. Find the actual distance if the scale on the map is 1 cm = 30 miles....
- M Mathematics A linear function that represents the number of animals adopted from the shelter is compared to a different linear function that represents the hours volunteers work...
- M Mathematics Joseph drove from Kentucky to Louisiana. It took 35 gallons of gas for him to get there. Gas costs $2.09 per gallon. How much money did Joseph spend on gas?...
- C Chemistry What is the cathode ray? How was the Nature of cathode rays determined?...
- B Biology Please help me with this one also just solve number one...
- M Mathematics How many hours would someone who earns 9.75 per hour have to work to earn 351...
Ответ:
d. 85%
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
.
The margin of error is:
The higher the confidence level, the higher the value of z, which means that the margin of error will be higher and the interval will be wider,
Which confidence interval would be the narrowest?
The one with the lowest confidence level. So the answer is d.
Ответ:
60
Step-by-step explanation:
12 times 5
30 times 2