Question 1-33Determine which of the following sampling methods is the best way to select a group of people for a study if you are interested in making statements about the larger population?O Convenience samplingRandom samplingO Purposive samplingo Quota sampling

Concept: Convenience sampling: It involves the data from reliable and convenient people. For…

Answered: Determine which of the following…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 1.5 percentage points of the true population percentage. Complete parts (a) and (b) below. 最籤服 a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.)
If the sample size is decreased, then the sampling error will - a. not change b. Increase c. inrease or decrease d. Decrease
L ook Back and Reflect Think about the answers to these questions. Discuss your answers with your classmates. What is the shape of the histogram that represents the sampling distribution of the sample means? Why do you think so?
What is the shape of the sampling distribution?
Let's examine the mean of the numbers 1, 2, 3, 4, 5, 6, 7, and 8 by drawing samples from these values, calculating the mean of each sample, and then considering the sampling distribution of the mean. To do this, suppose you perform an experiment in which you roll an eight-sided die two times (or equivalently, roll two eight-sided dice one time) and calculate the mean of your sample. Remember that your population is the numbers 1, 2, 3, 4, 5, 6, 7, and 8. The true mean (µ) of the numbers 1, 2, 3, 4, 5, 6, 7, and 8 is , and the true standard deviation (o) is The number of possible different samples (each of size n = 2) is the number of possibilities on the first roll (8) times the number of possibilities on the second roll (also 8), or 8(8) = 64. If you collected all of these possible samples, the mean of your sampling distribution of means (µM) would equal and the standard deviation of your sampling distribution of means (that is, the standard error or ɑm) would be The following chart…
Describe the sampling distribution of p. Round to three decimal places when necessary. N=22,000, n=400, p=0.3
Knowing that you need a sample pool of 536 students to ultimately get about 250 students in your sample, you are in position to draw a systematic sample from the student directory at your university. Further, 5,000 students are listed in the directory. What is the sampling interval?
Find the sample mean for the following data set 82,52,59,41,59,53,69,30
Find 11 (3 (3x + 2y)dA where R is the parallelogram with vertices (0,0), (4,5), (-3,1), and (1,6). Use the transformation = 4u - 3v, y = 5u + v.
You answered this question: What is the Sample Variance for the following numbers:52, 62, 52, 45, 41
13) The integer n = a) If n = 3 (mod 9), then what is x ? b) If n = 3 (mod 11), then what is x ? Hint for #13: 12700140x3243243 is missing the digit x. Consider the number 1234. By writing each digit in scientific notation, we have 1234 1 x 10³ +2× 10² +3 × 10¹ + 4 × 10⁰ Then notice that 10 = 1 (mod 9). When we reduce mod 9, we obtain 1234 1 x 10³ +2× 10² +3 x 10¹ + 4 x 10⁰ = = 1x 1³ + 2 x 1² + 3 × 1¹ + 4 × 1⁰ = 1+ 2+ 3+ 4 = 10 = 1 (mod 9). Since 10 = -1 (mod 11), when we reduce mod 11, we obtain 1234 1 x 10³ +2× 10² +3 x 10¹ + 4 x 10⁰ = = 1x (-1)³ +2× (-1)² +3 × (-1)¹ +4× (-1)⁰ = -1 + 2-3 + 4 = 2 (mod 11).

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Determine which of the following sampling methods is the best way to select a group of people for a study if you are interested in making statements about the larger population? o Convenience sampling O Random sampling O Purposive sampling o Quota sampling