Answered: the statement that there is some…

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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the statement that there is some difference in the population, denoted as Ha or HI is also known as?

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A researcher wishes to demonstrate that the mean income of American families with 4 members is now more that $65,000. Using standard symbols the alternative hypothesis is
2) In a survey, 130 respondents in a town were interviewed regarding their marital status. Of these 130 respondents, 50 are men. 20 women out of 34 respondents are still single. 16 out of 50 men are married with children. 36 respondents are married with no children of whom 24 are women. 8 men out of 14 respondents are divorced. Tabulate the given data.
The following table gives the classification of 100 workers according tosex and the nature of work. Test whether the nature of work is independentof the sex of the work. Skilled Unskilled Male 40 20 Female 10 30
20. A survey asked 16 boys and 14 girls about their shirt color. There were 8 boys with blue shirts, 6 girls with red shirts, and 6 girls with white shirts. There were a total of 9 boys and girls with red shirts. What is the joint relative frequency of a boy wearing a red shirt? Sign out INTL 1 acer
Mr Javier, a bank manager is interested in the amount of time it takes his teller to service depositors. On a particular morning, he asked his secretary to record the service time for 15 costumers. The times are given below. (to the nearest minutes). 6, 9, 7, 5, 15, 10, 9, 7, 4, 9, 10, 9, 8, 6, 7 Find: a.) mean service time b.) Median c.) lower quartile(Q1) d.) Upper quartile(Q3)
Suppose you have a data set that includes the values 20,30, and 50. If you add a fourth value to this data set, and after doing that the mean of the data set is 50, what was the value that you added? a) 20 b) 40 c) 50 d) 100
When we are hypothesis testing on people's favorite color, we should use:
please complete the blank problem and or ones with a red x next to it not ones with a green check next to please
20 high school Spanish teachers attended an summer course to improve their listening skills. They took the MLA listening test both before and after the course. Before the course they had a mean of 27.3 with s=8.04. After the course they had a mean of 28.75 with s=2.74. We want to know if the course improves scores. A.) State an appropriate Ho and Ha. B.) Carry out a test. Can you reject at the 5% significance level? at the 1% level?
The numbers of students in the sections of principles in statistics are considered as:
In the following picture there is a box diagram or two variables containing the annual income of mayors and annual income per person for a sample of 32 towns in Puerto Rico The distribution of annual income of the mayors in this 32 towns of Puerto Rico are: A. Can’t tell B. Symmetric C. Skewed to the left D. Skewed to the right
The two-way table below reflects the responses from a group of middle and high school students regarding cell phones. What is the best interpretation of the number "25" in the table? would It be There are 25 people have a cell phone 25% of the people are 10 to 12 year old's Out of all 170 people surveyed, only 25 have a cell phone or There are 25 ten to twelve year old's that have a cell phone

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