32. What percent of the US Population are Senior Citizens? People age 65 and older constituted 13%of the population in 2010. Figure 3.10 shows sample proportions from two sampling distributionsof the proportion of people aged 65 and older in the US. One distribution shows samples of size100 and the other shows samples of size 1000.0.05 0.07 0.09 0.11 0.13 0.15 0.17 0.19 0.21 0.23 0.25Proportion Age 65+ (n=100)0.05 0.07 0.09 0.11 0.13 0.15 0.17 0.19 0.21 0.23 0.25Proportion Age 65+ (n=1000)Figure 3.10 Sampling distributions for n = 100 andn = 1000(a) What is the center of both distributions?(b) What are the appropriate minimum and maximum values for:The distribution for samples of size 100:The distribution for samples of size 1000:(c) Estimate the standard error for:The distribution for samples of size 100:The distribution for samples of size 1000:(d) If one more sample were taken in each case. Would a sample proportion of 0.17 be surprisingto see in:The distribution for samples of size 100:The distribution for samples of size 1000:

(a) Center of both distributions: The center is the peak of each distribution, which visually…

Answered: 32. What percent of the US Population…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A governmental agency computed the proportion of violent crimes in the United States in a particular year falling into each of four olo categories. A simple random sample of 550 violent crimes committed in California during that year were categorized in the same way. The following table presents the results. U.S. California Category Proportion Frequency Murder 0.012 Forcible Rape 0.058 20 Robbery 0.360 207 Aggravated Assault 0.570 318 Send data to Excel Can you conclude that the proportions of crimes in the various categories in California differ from those in the United States as a whole? Use the 0.01 level of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 4 Part 1 of 4 (a) State the null and alternate hypotheses. Save For Later Submit Assignment Check Answer Skip Part O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy (? 5/2 Search insert 山园

For the following sample data, find M: 8 , 2, 2, 5, 3.
7
3. Suppose a new sample is chosen and you got the following estimated OLS line: predicted birthweight_in_oz = 120-3.2 dailycigarettes. What would be your estimate of B if birth weight were recorded in pounds? (Hint: 1 pound 16 ounces) a. -38.4 b.-0.2 c. -0.15 d. -2.4
9 Below are the results of two polls of random samples of high school seniors and juniors, who were asked if they approve of, disapprove of, or do not care about a proposed ban of energy drinks on high school campuses. Poll I Poll II Approve Disapprove Do Not Care Total Seniors 10 30 60 100 a. Compare the proportions of seniors and juniors who approve, disapprove, and do not care in the two polls. EDIT CALC TESTS Interval.... 8: Interval.... 9:2 amPZInt.... 8:2-9PTInt..... A: 1-Pro B: 2-Prop nt...... DUX2-Test..... Int...... Juniors 12 32 56 100 For each poll, use your calculator or computer software to compute a tablof expected counts and x². 554 File Data Edit Craph Sta DOUAX De HVIS MITANTS D 5 4 7 te 24 Aprove ALDRIVE De Care Toul E Serc 40 :50 Date A Approve Disapprove Do Not Care Total Regression Linear Quadratic Cubic Quartic Power tom Tools Help Test domizat Distribution stribution of male... Exponential Logarithmic Seniors Juniors 100 120 300 320 600 560 1,000 1,000 Polynomial…
1. Given the random sample results below showing the percentages of people who support the death penalty, conduct a difference between proportions test and describe what the results mean. Male %=54 N=75 Female %=43 N=88
1. Consider a sample with data values of 2.20; 1.98; 1.95; 2.27; 2.25; 2,24; 2.31 Compute the mean.
Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the 20th, 25th, 60th, and 70th percentiles. If needed, round your answers to two decimal digits.
Here is a sample data set. Frequency = 238.4 238.6 272.3 280.6 288.1 291.1 296.8 303.8 308.5 316.5 320.1 360.4 360.4 360.4 363.9 364.3 377.1 378.6 380.4 381.6 388.1 390.2 392.1 404.2 405.3 405.3 406.1 408.5 409 412.4 414.4 416.1 419.7 419.8 422 423.8 424.6 424.6 424.6 427 430.7 439.9 440 459.7 466 471 488.1 491 494.9 498.4 508.1 420.8 = 20 15 10 Find the first quartile for this data set. Q₁ = 5 200 250 300 350 400 450 500 550 length (cm) Find the third quartile for this data set. Q3 Find the interquartile range for this data set. IQR 339 368 Find the lower fence separating outliers from usual values. Fence Low = Find the upper fence separating outliers from usual values. Fence high =
Treat the dataset as your bag of peanut M&M’s (a simple random sample). Count the number of orange M&M’s and the total number of M&M’s in your bag. Then determine the proportion of your M&M’s that are orange. Number of orange M&M’s: 13 Total number of M&M’s: 65 Proportion of orange M&M’s: 0.2 Question below is according to this.
A government agency computed the proportion of U.S. residents who lived in each of four geographic regions in a particular year. Then a simple random sample was drawn of 1000 people living in the United States in the current year. The following table presents the results. Region Past YearProportion ObservedCounts Northeast 0.171 150 Midwest 0.245 235 South 0.357 398 West 0.227 217 Send data to Excel Can you conclude that the proportions of people living in the various regions changed between the current year and the past year? Use the 0.05 level of significance and the P-value method with the TI-84 Plus calculator. What the P value?
2. Given the following observations from a sample, calculate the mean, the median, and the mode. 4 0 -6 1 -3 -4

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