A random sample of 600 people from a certain district were questioned and the results indicated that 30% used a particular product. In a second random sample of 300 people. 96 used the product. Using the data from the two samples, find the best estimate of the proportion of people in the district who used the product

Q: Write 5 characteristics that applies to the normal distribution curve. The monthly salaries of…

A: 5 characteristics that applies to the normal distribution curve in below step

Q: For the given dataset, find the range? 21,13,24,31,18,16,34,11

A: Given that  The data set 21,13,24,31,18,16,34,11

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Q: Stem Leaf 1234578 A 65 01159 13678 C 74 0133367 235579 What is the range for the above stem and leaf…

A: From given data Max. Value = 84 Min. Value  = 10

Q: A data set includes data from student evaluations of courses. The summary statistics are n = 97, x =…

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Q: One variable A. 3 moments, calculation and definition B. Normal distribution density function C.…

A: As per our guidelines I can solve only first question. Please post the remaining questions again and…

Q: The following are ages of 20 of the signers of the Declaration of Independence. 60 , 39, 45, 38,…

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Q: 25. In a sample with 169 persons with epilepsy, a depression scale was used to screen for depression…

A: As per our guidelines I can solve only first 3 subparts. Post the remaining subparts again and…

Q: What is the range for the above stem and leaf plot?

A: The range is defined as Range = Maximum - Minimum

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Q: 1) Let X₁, X2, X3, ... Xn be a sequence of independent and identically distributed with the…

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Q: B. A manufacturing company is analyzing its accident record. The accidents fall into two categories:…

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Q: Is P(x < 7) equal to P(x ≤ 7)? Why?

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Q: Explain the difference between a one-tailed and two-tailed significance test. When is it appropriate…

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Q: A process of drawing a sample is called Sampling Census Both none

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Q: A random variable X has the following probability distribution. 4 6 0.3 0.2 If a sample of size 2 is…

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Q: Suppose you wish to determine the degree to which annual earnings of professional golfers (Earnings)…

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Q: The following table summarizes the results of a study on SAT prep courses, comparing SAT scores of…

A: " Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: In a survey of 3500 ​adults, 1443 say they have started paying bills online in the last year.…

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Q: In a linear regression model, E (y) = a + Bx, B represents: O x-intercept the change in E(y) for a…

A: Regression model  Y=ɑ+βx+ e

Q: Suppose that a sequence of mutually independent and identically distributed discrete random…

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Q: following probability density function: >= { / ² f(x) = e, if 0<x<∞ otherwise Suppose that Y = Σ₁…

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Q: Determine the minimum sample size required when you want to be 99​% confident that the sample mean…

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Q: The distribution of heights of adult men is approximately normal with mean 69 inches and standard…

A: Given that: Mean = 69 inches Standard deviation = 2.5 inches

Q: Compute the Variance, Standard Deviation and Coefficient of Variation Female (x) Frequency (f) fx…

A: Given data is Female (x) Frequency(f) 59 1 60 5 61 1 62 4 63 3 66 1

Q: biologist looked at the relationship between humb of seeds a plant produces and the percent of those…

A: x y xi-x yi-y (xi-x)2 (yi-y)2 (xi-x)(yi-y) 636956594061414545 47.544.54760.57354.569.556.570.5…

Q: QUESTION ONE A. Consider the following sample with 20 observations: 1 1 5 7 9 11 TT 20 28 88 11 (i)…

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Q: he number of cans of soft drinks sold in a machine each week is recorded below. Develop forecasts…

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Q: Example 12.5 Two samples of sizes 40 and 50, respectively, are taken from a population with unknown…

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Q: (This example is a puzzle that doesn't use the theory of this section.) We've discussed how to…

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Q: magine that you first estimate an OLS regression with a random sample of 100 observations and then…

A: Introduction: It is required to identify the correct option.

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A: From the provided information, Sample mean (x̄) = 550 Sample variance (s2) = 6400

Q: Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given…

A: Note: As per my policy i can answer only three sub parts. kindly repost the remaining sub parts.…

Q: The mean score of 15 male students taking an economics test is 74 and the mean score of 12 female…

A: GivenNo.of Male students(n1)=15Mean score of male students(x1)=74No.of Female students(n2)=12Mean…