田CENGAGE MINDTAPQ Search this courseEnd-of-Chapter Problems: Chapter 05 z-Scores: Location of Scores and Standardized DistributionsFor each of the following populations, would a score of X = 85 be considered a central score (near the middle of the distribution) or an extreme score(far out in the tail of the distribution)?y ToolsH = 75 and o = 15O ExtremneipsO CentralpsU = 80 and o = 2O ExtremeO CentralU = 90 and o = 20O ExtremeO CentralH = 93 and o = 38:38 PM69 FHi O n C3/17/2022searchhp

Givenx=85Mean(μ)=75standard deviation(σ)=15

Answered: End-of-Chapter Problems: Chapter 05…

MATLAB: An Introduction with Applications

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Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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3). Two sample cases. A business major student is given a data set in Spread- sheet "Question 5": Sample 1 (x): 6.59 8.74 7.75 5.79 1.39 5.62 5.51 2.96 4.48 4.08 0.48 6.54 6.50 8.73 2.84 9.32 9.72 0.37 4.34 8.08 2.27 3.34 4.08 5.52 3.27 6.59 8.74 7.75 5.79 1.39 Sample 2 (y): 19.78 3.18 2.88 2.56 8.03 6.65 5.23 8.39 12.29 13.46 9.54 -0.36 1.62 3.54 -0.16 9.73 6.11 13.46 10.72 14.45 8.77 10.25 7.62 10.38 n=30, = x = 158.55, 21047.298, της 24, Συ= 188.11, Στ2 Σ Σ= = 2045.635. Assume that two populations are independent and normally distributed with means μ1, H2 and standard deviations 01, 02, respectively. (a) What is the point estimate of 1-2? What is the margin of error E associated with this estimate (use a = 0.05)? (b) Find 95% confidence interval for μ1 - 2. (c) Test Ho 1 μ2 = 0 vs H₁₁₂ <0 at a = 0.01.
PROBLEM: Calculate the quartiles for the following dataset: Class Interval 1-5 6-10 11-15 16-20 21-25 26-30 31-35 36-40 Frequency 6 19 13 20 12 11 6 5 60₂ D3 Pro
Number 2 only
B. A sample data has a distribution that has a single mode and is strongly positively skewed. An analyst computes three measures of location for this data; the mean, the median and mode. (i) State the largest of these three location measures. (ii) Suggest, with a reason, which would be the best measure of location.
1. Suppose the proportion of American adults who work at home is 40%. For a random sample of 100 American adults, what is the distribution of the sample proportion?
Section 3.1, question 3
Example 11. A collar manufacturer is considering the production of a new type of collar to attract young men. The following statistics of neck circumferences are available based upon the measurements of typical group of college students : Mid-value No. of students Mid-value No of students (inches) (inches) 15.0 15.5 16.0 4 29 12.5 13.0 13.5 14.0 14.5 19 18 30 1 63 16.5 1 66 Compute the mean, the standard deviation and variance.
Histograms of random sample data are often used as an indication of the shape of the underlying population distribution. The histograms on the next page are based on random samples of size 30,50 and 100 from the same population. a. Using the midpoint labels of the three histograms, what would you say about the estimated range of population data from smallest to largest? Does the bulk of the data seem to be between 8 and 12 all in three histograms? b. The population distribution from which the samples were drawn is symmetric and mound shaped, with the top of the mound at 10,95% of the data between 8 and 12, and 99.7% of data between 7 and 13. How well does each histogram reflect these characteristics?
In a certain populalion, let us assume that IQ scores are normally distributed with mean of 100 and standard devialion of 15. What percentage of the population have IQ scares more than 116? Select one: a. 0.6808 O b. 0.2327 O c. 0.3192 C d. 0.8577 e. 0.1423 f. 0.7673
12)
If two large random samples are drawn from two populations, each having a mean of $100, the relevant sampling distribution of their difference has a mean of a. 200 b. The Sum of the 2 Sample Means C. 0 D. The difference between the two sample means.

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