![subject](/tpl/images/cats/mat.png)
Mathematics, 07.05.2020 07:06 shoobywee
Suppose the length, in words, of the essays written for a contest are normally distributed and have a known population standard deviation of 325 words and an unknown population mean. A random sample of 25 essays is taken and gives a sample mean of 1640 words. Identify the parameters needed to calculate a confidence interval at the 98% confidence level. Then find the confidence interval. z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576 You may use a calculator or the common z values above. Round the final confidence interval endpoints to the nearest whole number.
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 17:30
The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:10
The equation |pl = 2 represents the total number of points that can be earned or lost during one turn of a game. which best describes how many points can be earned or lost during one turn? o o -2 2 oor 2 -2 or 2 o
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:00
The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm
Answers: 1
![question](/tpl/images/cats/mat.png)
You know the right answer?
Suppose the length, in words, of the essays written for a contest are normally distributed and have...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 23:10
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 23:10
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 23:10
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 23:10
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 05.05.2021 23:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 23:10
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 05.05.2021 23:10
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 23:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 23:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 05.05.2021 23:10
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 23:10