How many apps? According to a website, the mean number of apps on a smartphone in the United States is 87 Assume the number of apps is normally distributed with mean 87 and standard deviation 30 . Part: 0 / 2 0 of 2 Parts Complete Part 1 of 2 (a) What proportion of phones have more than 137

How many apps? According to a website, the mean number of apps on a smartphone in the United States is 87 Assume the number of apps is normally distributed with mean 87 and standard deviation 30 . Part: 0 / 2 0 of 2 Parts Complete Part 1 of 2 (a) What proportion of phones have more than 137

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: The scores and their percents of the final grade for a statistics student are given. An error…

A: Let x denote the scores and w denotes the weights. Then the weighted mean is calculated as W.M =…

Q: Five students find the following number of pencils in their backpacks: 3, 1, 4, 3, 15. Find and…

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: The coefficient of variation CV describes the standard deviation as a percent of the mean. Because…

Q: 4. An instructor at a local community college noted that the grades of his students were normally…

Q: Write one paragraph describing the data set using the information about the mean, mode, range,…

A: The mean of gross value added for the years is 90.5875 which mean the average gross value added for…

Q: Question Help Researchers measured the data speeds for a particular smartphone carrier at 50…

A: Given:

Q: We have provided simple data sets for you to practice the basics of finding a a. population mean. b.…

A: Solution: a. Let X be the random variable. The given data is 1, 2, 4, and 4

Q: II. Find the weighted mean price of three models of television sets sold. The number and price of…

A: Solution :-

Q: Identify the level of measurement of the data, and explain what is wrong with the given…

A: Given that In a survey, the favorite foods of respondents are identified as 0 for Italian food, 1…

Q: Please give detailed explanations to these questions that will help me better understand . Use the…

A: Note: Probability can be obtained using this basic formula: P = X/Nwhere:P = ProbabilityX = Number…

Q: E) Using a significance level a= 0.05, find the critical value using the following steps. 1. What…

A: As per our guidelines we are allwoed to answer three sub-parts Null and Alternative Hypotheses The…

Q: . What is the mean? Round your answer to the nearest tenth. _________________________ B. What is…

A: given data : 15,21,25,16,21,14,13,-1,6,-2,-6,15,16,21,22

Q: PRACTICE ANOTHER Use the table to answer each question. Note: Round z-scores to the nearest…

A: Given data,μ=102σ=16

Q: Consider the Mark's grade below. Using the concept of weighted mean, solve his Grade Point Average…

A: Formula for GPA =∑ Gradex credit∑ credit Sum of all the credit=4+3+3+4

Q: From the study on work sampling, it was found that a group of machines - consisting of 4 machines -…

A: It is given that 65% of machines can be operated without operators and 35% need operators to…

Q: 1,2,2,3,4,6,8,10,24. What is the best Consider the following ratio - level scores : choice for…

A: Answer: IQR

Q: Give typed explanation Calculate the mean, median, standard deviation, and coefficient of…

A: To find the mean median and standard deviation and coefficient of variation.

Q: __ is a measure of speed and describes the difference between the mean and random variable? a.…

A: In this case, one needs to fill the suitable answer.

Q: Which one measure of variation should you report for the variable AGE (people write their actual age…

A: The measures of variation are descriptive statistics that determine the spread of the data.

Q: 1. (12pt) A researcher is studying hospital cleanliness comparing carpeted rooms with uncarpeted…

Q: Calculus I scores at College A have mean 70.21 and standard deviation 15.32; Calculus I scores at…

A: Calculus I scores at College A have mean 70.21 and standard deviation 15.32;Calculus I scores at…

Q: What is the mean and median of the data represented in this Stem and Leaf Display? Round answers to…

Q: QI: Calculate Mean, Median, Mode, Variance, Standard Deviation and Coefficient of Variation for the…

A: Given data 34,30,43,22,37,26,31,42,31,24,35,25,29,34sample size(n)=14

Q: USE A CALCULATOR In the 1992 presidential election, Alaska’s 40 election districts averaged 1,956.8…

A: Hey, since there are multiple subpart questions posted, we will answer first three subpart…

Q: In California, we need more rain to sustain the health of our natural environment, argriculture, and…

A: Given: Inches of Rain Frequency fx 1 2 2 2 3 6 3 4 12 4 4 16 5 8 40 6 4…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: Let X denote the IQ scores and it follows normal distribution with mean of μ=100 and standard…

Q: Subject: statistics . 500,000 DC Commuters traveled to DC every day. The average distance…

A: Population mean, μ=13 Population sd, σ=4.7

Q: Find the mean and standard deviation for the individualized instruction scores. Scores…

Q: Create a histogram for each of your variables using the same classes that you used for your…

A: The first histogram that is defined for male population is skewed to the right a it has a frequency…

Q: How can I Calculate the mean and median of the data set by hand.

A: Statistics is the branch of Applied Mathematics in which we do collection, analysis, interpretation…

Q: Statement: I will consider visiting the same destination for my next tour. Using a Likert-5 scale,…

A: The average chances of visiting the same destination for my next tour is 20.02.

Q: A golf association requires that golf balls have a diameter that is 1.68 inches. To determine if…

Q: The list shows the number of text messages 5 students sent on Tuesday. 15, 45, 70, 30, 120 What is…

A: We know that for n data set Mean absolute deviation is given by, Mean Absolute deviation =1n…

Q: We have provided simple data sets for you to practice the basics of finding a a. population mean. b.…

Q: Assume a mean of 105 papers and a standard deviation of 15 papers. Pays 40¢ for each paper, paper…

A: Given information: μ=105σ=15Cost price for paper=40 centsSelling price for paper=90 cents

Q: is the range of tree height within one standard deviation of the mean? Wilat O 35 to 75 O 5 to 105 O…

A: We have given that, The hights of the tree are, 31, 41, 64, 107, 43, 32, 39, 41, 55, 39, 104, 53, 65…

Q: Question Help A study was conducted on shoe sizes of students, reported in European sizes. For the…

A: Given: E(Eurosize) = 45.84 SD(Eurosize) = 2.17

Q: The scores and their percents of the final grade for a statistics student are given. An error…

A: The scores and their percents of final grades for a statistics student are given.

Q: Please no written by hand solution and no img Below is the population of data: 2 5 6 What…

A: By using given data find following table, x x2 2 4 5 25 6 36 ∑x=13 ∑x2=65

Question

How many apps? According to a website, the mean number of apps on a smartphone in the United States is

87 Assume the number of apps is normally distributed with mean

87 and standard deviation

Part: 0 / 2

0 of 2 Parts Complete

Part 1 of 2

(a) What proportion of phones have more than

137

apps? Round the answer to four decimal places.

The proportion of phones that have more than

137

apps is

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: We have given that

VIEW

Step 2: Finding probability

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

A manufacturer collected a sample of 56 bolts of cloth from a day's production. Each bolt is carefully inspected and the number of imperfections is recorded in the following table. According to the given table, mean is median is mode is (Round your answer to three decimal places if needed.) Number of imperfections 1 Number of bolts 39 9. 3 3. 2. 5.
open file attached for question
We have provided simple data sets for you to practice the basics of finding a a. population mean. b. population standard deviation. 4, 2, 0, 2, 2
answer only c-e In the 1992 presidential election, Alaska's 40 election districts averaged 1939 votes per district for President Clinton. The standard deviation was 550. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places.a. What is the distribution of X? X ~ N(40, 550)c. Find the probability that a randomly selected district had fewer than 1961 votes for President Clinton. ___________d. Find the probability that a randomly selected district had between 1843 and 2007 votes for President Clinton. __________e. Find the first quartile for votes for President Clinton. Round your answer to the nearest whole number. _________
A sample of the lifetime of an electrical component is given bellow, in number of hours: 123, 116, 122, 110, 210, 126, 125, 111, 118, 117 Calculate the sample mean and sample median for these lifetimes. Sample Mean 127.8 Sample Median 120 Can you explain why these two measures of location are so different? Submit Question
9. 6. 3 3. 3. 4. 6. Find the average (mean): Find the median: I Calculator > Next Question MacBook Air F3 F4
Provide detailed definitions for the list of words and/or phrases below: Descriptive Statistics also called Raw data can be hard to interpret so we will use 1. 2. Which methods to use depends on the type of variable(s) being analyzed.
3. Using the two tables of output below, write three summary statements in APA format. Be sure you report results such as Mean and SD in proper APA format. Coffee refers to the amount of money spent on coffee in the previous week, soda refers to the amount of money spent on soda in the previous week, and sleep refers to the average daily number of hours spent sleeping in the previous week. Descriptive Statistics Mean Std. Deviation coffee 7.5500 9.62166 20 soda 6.1000 6.79706 20 sleep 7.2625 1.38001 20
answer letter B using the above informations
Calculation of a mean is most appropriate for which of the following sets of data? Attitudes of graduate nurses toward the elderly measured by axillary temperature Ranking of nursing students by clinical instructors according to perceived technical ability. Percent of nurses in each specialty area.
Ten friends kept track of how many times they sent a text over a one hour period. The results are in the table below. number of texts 5 6 7 7 8 10 10 15 16 17 They determine that the mean of the data set is 10.110.1, but they also want to know the range and standard deviation. Calculate the range of the data set.Is this correct answer 12? Calculate the POPULATION (since it's just two friends, they're the population) standard deviation of the data set.I have a hard time
K A data set lists weights (lb) of plastic discarded by households. The highest weight is 5.26 lb, the mean of all of the weights is x=2.312 lb, and the standard deviation of the weights is s = 1.118 lb. a. What is the difference between the weight of 5.26 lb and the mean of the weights? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the weight of 5.26 lb to a z score. d. If we consider weights that convert to z scores between 2 and 2 to be neither significantly low nor significantly high, is the weight of 5.26 lb significant? a. The difference islb. (Type an integer or a decimal. Do not round.) View an example Get more help. ... Clear all Check answer Incor