Mathematics, 22.07.2021 20:00 ciara180
Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. They randomly survey 401 drivers and find that 294 claim to always buckle up. Construct a 90% confidence interval for the population proportion that claim to always buckle up. Use interval notation, for example, [1,5].
Answers: 1
, and a confidence level of 
, we have the following confidence interval of proportions.
.
![n = 401, \pi = \frac{294}{401} = 0.7332. 90% confidence level So [tex]\alpha = 0.1](/tpl/images/1398/1397/e86fb.png)
, z is the value of Z that has a p-value of 
, so 
. 
Another question on Mathematics
Mathematics, 21.06.2019 15:00
Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.
Answers: 3
Mathematics, 21.06.2019 17:20
The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6
Answers: 3
Mathematics, 21.06.2019 18:30
Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).
Answers: 1
You know the right answer?
Insurance companies are interested in knowing the population percent of drivers who always buckle up...
Questions
Spanish, 02.07.2019 12:40
Mathematics, 02.07.2019 12:50
Mathematics, 02.07.2019 12:50
Social Studies, 02.07.2019 12:50
Social Studies, 02.07.2019 12:50
Geography, 02.07.2019 12:50
Social Studies, 02.07.2019 12:50
Mathematics, 02.07.2019 12:50
English, 02.07.2019 12:50
Mathematics, 02.07.2019 12:50
Biology, 02.07.2019 12:50
