Given the distribution of salaries for Company B is normal. The population mean is $52000. Thepopulation standard deviation is $1500. A sample 64 salaries are selected at random and themean, x-bar, is calculated. Answer Questions 1 and 2.1. Find (X-bar > 48000.)2. Find P( 50000 54000).3. Given N= 6 Statistic test scores: X= 60, 70, 75, 80, 85, 90. Find the Population Varianceand Standard Deviation.4. Given n=15 Test scores in Algebra: 60, 62, 68, 70, 72, 74, 78, 79, 82, 84, 86, 90, 92, 94,95. Find the Percentile corresponding to x= 78 and x= 90.5. The population standard Deviation of a Standardized Anatomy Exam was 500 with a standarddeviation of 48. Assume the distribution of scores is Bell-shaped.a) 47.5% of the scores are in what intervals?b) 49.85% of the scores are in what intervals?A manufacturer of mint chocolate chips would like to know whether its bag filling machineworks correctly at the 440 gram setting. The Quality assurance team claims that the machine isfilling the bags is less than 440 grams. A sample of 26 bags had a sample mean of 436.5 grams.The sample standard deviation is 3.50 Assume a Level of Significance of a=0.01. Test theclaim. Answer Questions 6-10.5. State the Null and alternative Hypotheses6. Find the Critical Value7. Calculate the Test value.8. Make a Decision9. Summarize the Results.The data below are years(x) and the profit (y) in millions of dollars for Company X. (n = 6)х у0 151 122 103 7455 311. Find the Correlation Coefficient r.12.Interpret your result in #11.13. Find the Linear Regression Equation: y-hat = mx + b14 .Find y-hat when x = 0, 2, 4, 5 and 6.

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Given the distribution of salaries for Company B is normal. The population mean is $52000. The population standard deviation is $1500. A sample 64 salaries are selected at random and the mean, x-bar, is calculated. Answer Questions 1 and 2. 1. Find (X-bar>48000.) 2. Find P( 50000 54000).

Given the distribution of salaries for Company B is normal. The population mean is $52000. The population standard deviation is $1500. A sample 64 salaries are selected at random and the mean, x-bar, is calculated. Answer Questions 1 and 2. 1. Find (X-bar>48000.) 2. Find P( 50000 54000).

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

100%

Given the distribution of salaries for Company B is normal. The population mean is $52000. The
population standard deviation is $1500. A sample 64 salaries are selected at random and the
mean, x-bar, is calculated. Answer Questions 1 and 2.
1. Find (X-bar > 48000.)
2. Find P( 50000 <X-bar > 54000).
3. Given N= 6 Statistic test scores: X= 60, 70, 75, 80, 85, 90. Find the Population Variance
and Standard Deviation.
4. Given n=15 Test scores in Algebra: 60, 62, 68, 70, 72, 74, 78, 79, 82, 84, 86, 90, 92, 94,
95. Find the Percentile corresponding to x= 78 and x= 90.
5. The population standard Deviation of a Standardized Anatomy Exam was 500 with a standard
deviation of 48. Assume the distribution of scores is Bell-shaped.
a) 47.5% of the scores are in what intervals?
b) 49.85% of the scores are in what intervals?
A manufacturer of mint chocolate chips would like to know whether its bag filling machine
works correctly at the 440 gram setting. The Quality assurance team claims that the machine is
filling the bags is less than 440 grams. A sample of 26 bags had a sample mean of 436.5 grams.
The sample standard deviation is 3.50 Assume a Level of Significance of a=0.01. Test the
claim. Answer Questions 6-10.
5. State the Null and alternative Hypotheses
6. Find the Critical Value
7. Calculate the Test value.
8. Make a Decision
9. Summarize the Results.
The data below are years(x) and the profit (y) in millions of dollars for Company X. (n = 6)
х у
0 15
1 12
2 10
3 7
45
5 3
11. Find the Correlation Coefficient r.
12.Interpret your result in #11.
13. Find the Linear Regression Equation: y-hat = mx + b
14 .Find y-hat when x = 0, 2, 4, 5 and 6.

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