Question: There are approximately one billion smartphone users in the world today. In the United States the ages of smartphone users approximately follow a normal distribution

There are approximately one billion smartphone users in the world today. In the United States the ages of smartphone users approximately follow a normal distribution with approximate mean and standard deviation of 36.9 years and 13.9 years, respectively. Write calculator function with values entered, and round to 3 decimal places:

Determine the probability that a random smartphone user is between 23 and 64.7 years old.
Determine the probability that a randomly selected smartphone user is less than 50.8 years old.
Find the 80th percentile of this distribution, and interpret it in a complete sentence.

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!

Refer to CVS Corporations annual report in the Supplement to Chapter 5 to answer the following questions. 1. Consolidated balance sheets: a. Did the amount of working capital increase or decrease...

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

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...

Googles ease of use and superior search results have propelled the search engine to its num- ber one status, ousting the early dominance of competitors such as WebCrawler and Infos- eek. Even later...

Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...

\fTable of Contents List of Figures R2 - Internal Competitive Analysis Internal Competitive Analysis of Top Tier Firms The social networking industry is split into two market segments: Consumer and...

MGMT 479- Strategic Management ANALYZING A CASE STUDY (Revised January 25, 2016) Rubric for Case Study - Maximum Points Available (100 Points) The purpose of the case study is to let you apply the...

I've attached the assignment as a word file, thanks! You can use the class readings for this week's assignments. c05MerchandisingOperationsandtheMultiple-StepIncomeStatement.qxd 8/14/10 2:14 PM Page...

Consider a reaction of the type aA products, in which the rate law is found to be rate = k[A]3 (termolecular reactions are improbable but possible). If the first half-life of the reaction is found to...

We live in fl and a lot people own boats. homeowner's policies typically offer liability coverage depending on the length and hp of your boat. What is an umbrella policy?

Nearly all enzymes that require a nicotinamide cofactor use either NAD ? * * / NADH or NADP ? * * / NADPH but not both. Compare the net charge of each cofactor. the net charges are N A D - 2 , NADH -...

The capital accounts for Alston Market on June 30, 2015, are as follows: Common stock, $6 par, 50,000 shares issued and outstanding . . . . . ... $ 300,000 Paid-in capital in excess of par . . . . ....

On August 17, the company declared cash dividends of $35,000. The dividends were paid on September 16. Make the journal entries necessary to record both events.

Enter the following transactions in a cash receipts journal: Nov. 1 Jean Haghighat made payment on account, $750. 12 Marc Antonoff made payment on account, $464. 15 Made cash sales, $3,763. 18 Will...

Enter the following transactions in a general journal: Nov. 1 Jean Haghighat made payment on account, $750. 12 Marc Antonoff made payment on account, $464. 15 Cash sales were $3,763. 18 Will Mossein...

On December 31, 2012, Paxon Corporation acquired all of the outstanding common stock of Saxon Company for $1.8 billion cash. Paxon uses the complete equity method to report its investment. The trial...

Using the basic economic order quantity (EOQ) model to determine an optimal order quantity, the annual total inventory ordering cost and the annual total inventory holding cost are always equal. True...

14. Think of a positive experience in your life, once you experienced that you had great creativity, great insight or a very strong concentration around some-thing you focused strongly on achieving....

How will it feel to have achieved this? Describe this briefly to yourself.

What does this look like?