Question: its for a practice exercise. in the United States the ages 13 to 55+ of smartphone users follow an approximately normal distribution with mean and

its for a practice exercise.

in the United States the ages 13 to 55+ of smartphone users follow an approximately normal distribution with mean and standard deviation of 36.9 years and 13.9 years, respectively. What is the percentile rank for 21 years?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

The year has passed and Ron has become used to being able to come to you with more and more complex finance and accounting questions about this Ukrainian Division. He has come into your office in the...

in the united states the ages 13 to 55+ of smart phone users approximately follow a normal distribution with approximate mean and standard deviation of 36.9 years and 13.9 year's respectively A....

Welcome! Please read this page (in particular) very carefully. Instructions You need to understand how to send your assignments (deliverables) to your instructor. The tabs (bottom of each sheet) in...

QUESTION 2 There are approximately one billionsmartphoneusers in the world today. In the United States the ages 13 to 55+ ofsmartphoneusers approximately follow a normal distribution with approximate...

There are approximately one billionsmartphoneusers in the world today. In the United States the ages 13 to 55+ ofsmartphoneusers approximately follow a normal distribution with approximate mean and...

8;4 1. [-/0.45 Points]DETAILSBBUNDERSTAT12 8.4.003. MY NOTES ASK YOUR TEACHER When testing the difference of means for paired data, what is the null hypothesis? H o : d 0 H o : d = 0 H...

There are approximately one billion smartphone users in the world today. In the United States the ages 13 to 55+of smartphone users approximately follow a normal distribution with approximate mean...

Please answer question 13. Formulas attached just in case 13) (4 points) A poll of 1,505 adults in the United States found that 55% believe America's best days are ahead with a margin of error of 3%...

Instuctor's Annotated Edition TENTH EDITION Understandable Statistics Concepts and Methods Charles Henry Brase Regis University Corrinne Pellillo Brase Arapahoe Community College Australia Brazil...

Set Student Name: 1. Answer true or false for each part, and if false, explain your answer. a. The point estimate for the population mean, , of an x distribution is x-bar, computed from a random...

A power equation is a nonlinear regression equation of the form y = ax b . Use a technology tool to find and graph the power equation for the original data. Include a scatter plot in your graph. Use...

The Newtown store reports that 52 of its customers have tire brand loyalty and 48 have no brand preference. The Westmount Park store reports 47 of its customers to have tire brand loyalty whereas 53...

What can be a consequence of poor export performance? Increase in domestic sales A negative impact on a company's growth Higher stock prices Expansion of international partnerships

I need help for quickbooks , this is for my accounting class Submit the 11 PDF files you created in Exercise 4-2. You can check your numbers by comparing to the numbers found in the Expense...