If you assume the normal model for these data, in about what percent of countries would the percentage of people 65 and older be more than 0.22? In about what percentage of countries would the percentage of people 65 and older be less than 0.14? ### Item 1: Percentage of Population Aged 65 and Older#### Graph DescriptionThe graph shown is a histogram representing the distribution of the percentage of the population aged 65 and older across various counties. The x-axis denotes the "Percentage of seniors (aged 65 years and over) in each county," with values ranging from 1% to 55%. The y-axis represents the "Number of counties."#### Analysis1. **Central Tendency:** - The peak of the histogram is observed between 15% and 19%, indicating that the most common percentage of seniors in many counties falls in this range. 2. **Dispersion:** - The distribution shows a bell-shaped curve, suggesting a normal distribution of the percentage of elderly population across counties. - There are relatively fewer counties where the senior population is either below 5% or above 30%, indicating that extreme values are less common.3. **Data Points:** - The highest number of counties, approximately 300, have around 18% of their population aged 65 and older. - As the percentage of elderly population increases beyond 20%, the number of counties decreases steadily.4. **Skewness:** - The graph is slightly right-skewed as there are a few counties with higher percentages (above 20%) of elderly population.#### Educational InsightsUnderstanding the distribution of the elderly population can aid in:- Resource allocation: Planning for healthcare, senior housing, and social services.- Policy making: Creating targeted policies for aging populations.- Demographic studies: Examining aging trends and preparing for future demographic shifts.This histogram effectively highlights the need for a balanced approach in elderly care and services across various counties, reflecting the demographic realities of aging populations.

Explanation: Normal distribution have following features: 1. 68% of the data falls within one…

If you assume the normal model for these data, in about what percent of countries would the percentage of people 65 and older be more than 0.22? In about what percentage of countries would the percentage of people 65 and older be less than 0.14?

If you assume the normal model for these data, in about what percent of countries would the percentage of people 65 and older be more than 0.22? In about what percentage of countries would the percentage of people 65 and older be less than 0.14?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The table below shows the number of state-registered automatic weapons and the murder rate for several states in the U.S. 11.6 8.4 6.7 3.5 2.7 2.7 2.2 0.9 14.1 11.3 9.9 6.8 6.2 6.3 5.8 I = thousands of automatic weapons y = murders per 100,000 residents Keep in mind, the data in the table do not necessarily imply a direct causal link between the two variables. (In fact, can you think of any reasons why these variables may not be directly related to each other?) Also, the purpose of this question is not to make a political statement about guns or gun control. It's only to illustrate that data such as these sometimes have mathematical relationships that can be modeled with linear equations. Those relationships should always be questioned and examined carefully. With that said, these data can be modeled by the equation y = 0.87z + 3.95. Use this equation to answer the following; A) If this model is oconsistent, how many murders per 100,000 residents can be expected in a state with 8.7…
A linear model was fit to predict weekly Sales of frozen pizza (in pounds) from the average Price ($/unit) charged by a sample of stores in a city in 39 weeks over a three -year period. The average Sales were 63, 200 pounds (SD = 10, 670 pounds), and the correlation between Price and Sales was -0.529. If the Price in a particular week was two SD higher than the mean Price, how much pizza would you predict was sold that week?
The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. X Y 11.4 8.4 6.6 13.7 11 9.3 X = thousands of automatic weapons y = murders per 100,000 residents 3.7 7.5 This data can be modeled by the equation y = Answer = 2.4 2.6 2.4 0.4 6.3 5.9 6.2 4.1 to answer the following; Special Note: I suggest you verify this equation by performing linear regression on your calculator. Answer = 0.84x +4.01. Use this equation A) How many murders per 100,000 residents can be expected in a state with 6.2 thousand automatic weapons? Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 6.9 thousand automatic weapons? Round to 3 decimal places.
Using the same data and information. Please answer this: Should you be encouraging or discouraging credit card sales? In answering this question, consider the following: Is the proportion of credit and non-credit sales significantly different? (a=.05) Is the average sale amount for credit sales different than the average sales amount for non-credit sales? (a=.05)
Part 2. Complete the following statements. A) The cumulative enrolment is the enrolment of the intervals smaller than the interval in question or equal to the latter. The graph of cumulative enrolment is represented by a function in B) The average, median and mode are three measures of of the C) The term refers to any data that deviates disproportionately from others. D) When the residual values are zero, then the correlation is called
When will a chi-squared statistic equal zero? You need to very specifically discuss the data.
Suppose the correlation between height and weight for adults is +0.40.What proportion (or percent) of the variability in weight can be explained by the relationship with height?
On average, a sample of n = 36 scores will provide a better estimate of the population mean than a sample of n = 49 scores from the same population.
ANSWER THE LAST 2 QUESTIONS PLEASE
In a data set with 25 scores, if the value 16 occurs 12 times, what is its relative frequency?
Please answer part a-d. please show all your work
kln 2.18 The report "Trends in Education 2010: Community Colleges" (www.collegeboard.com/trends) included the accompanying information on student debt for students graduating with an AA degree from a public community college in 2008. Debt Relative Frequency None 0.62 Less than $10,000 0.23 Between $10,000 and $20,000 0.10 More than $20,000 0.05 a. Use the given information to construct a bar chart. b. Comment on student debt for public community college graduates.