level a?6. Professor Jennings claims that only 35% of the students at Flora Collegework while attending school. Dean Renata thinks that the professor hasunderestimated the number of students with part-time or full-time jobs. Arandom sample of 76 students shows that 36 have jobs. Do the data indicatethat more than 35% of the students have jobs? Use a 5% level ofsignificance.What are we testing in this problem?i) single proportion ii) single meana) What is the level of significance?State the null and alternate hypotheses.What sampling distribution will you use? What assumptions are you making?b) What is the value of the sample test statistic?Find (or estimate) the P-value.c)d) Based on your answers in parts (a) to (c), will you reject or fail to rejectthe null hypothesis? Are the data statistically significant at level a?notor that it claims will

Hypothesis Testing: Hypothesis testing gives a strong foundation for developing data decisions for…

Answered: level a? 6. Professor Jennings claims…

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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You will be applying what you have learned in this course by gathering data and running a statistical analysis. 1) To study about the relationship between height and the weight, you need to collect a sample of nine (9) people using a systematic sampling method. a. What is the population of people? b.Where and how are you going to collect your sample? c. Does your sample accurately represent your population? Why or why not? d. Collect the sample and record the data. 2) (CLO 1) Construct a confidence interval to estimate the mean height and the mean weight by completing the following: a. Find the sample mean and the sample standard deviation of the height. b. Find the sample mean and the sample standard deviation of the weight. c. Construct and interpret a confidence interval to estimate the mean height. d. Construct and interpret a confidence interval to estimate the mean weight. 3) (CLO 2) Test a claim that the mean height of people you know is not equal to 64 inches using the…
A congressperson wants to come up with a single value to describe the prices of homes in their district. However, their district consists of a few homes that are extremely expensive compared to the others. Which descriptive statistic should they use? a. Range b. Mode c. Median d. Mean
A poll in Canada states that 67% of all respondents favor imposing the death penalty. The poll was considered accurate within 4.7 percentage points 95% of the time. How large was the sample size? Round up to the nearest whole number.
What is one indication that there are paired samples in a data set? Choose the correct answer below. O A. Knowing the value that a subject has in one group gives one no information about the value in the second group. OB. Each observation in one group is coupled with one particular observation in the other group. OC. The researcher is comparing two populations. O D. The researcher is working with two distinct groups in the data set.
1. A researcher plans to conduct a survey among students in a public high school. If the population of thisschool is 5,000, find the sample size and the percentage from the N population. (Margin of error is 5%)A = {9,10,11,7,13}B = {10,10,10,10,10}C = {1,1,10,19,19}a. Calculate the mean of each data set.b. Calculate the standard deviation of each data set.c. Which set has the largest standard deviation?
1. Explain the difference between z-tests (which use categorical data), and t-tests (which use numerical data). 2. Conduct a t-test, both when given statistics, and when given data. 3. Conduct a t-test, 2-sample t-test, and paired t-test. 4. Differentiate between the five types of tests we have learned so far.
When a researcher changes their data analyses to get the p-value they desire, that is known as a. HARKing b. p-hacking c. multiple comparisons d. a Type II error
The sample mean is the point estimator of а. O b. o О с. р С. O d. H
Lucy is estimating the income level of households in a specific zip code. She randomly calls 100 households and collects information about their income levels. Which of the following is not true. 1. The average income level of all households in the zip code is a population parameter. 2. The total income of the surveyed households is a sample statistic. 3. The average income of the surveyed households is a sample data. 4. The surveyed households are considered a sample of the overall population of households living in the zip code.
3. A number or a summarized measure that describes the characteristic of a sample is called statistic. a. b. parameter. váriation. C. d. central tendency.
18. The governor of New York has banned selling or purchasing "large" soft drinks, where a "large" is defined as being more than 16 oz. Sonic, famous for its Route 44 drinks is interested in estimating the proportion of New Yorkers that favor this ban. From a random survey of 800 New Yorkers, 375 answered no to the question, “Do you favor the governor's ban on 'large' soft drinks?" a. Find a 97.5% confidence interval for the proportion of New Yorkers who favor the ban on "large" soft drinks. b. Interpret the confidence interval. c. Can you conclude with 97.5% confidence that a majority of New Yorkers favor the ban on "large" soft drinks? Why or why not. d. Without doing any other calculations, can you be 99% confident that a majority of New Yorkers favor the ban on “large" soft drinks?
2. In the past, approximately 24% of workers said they brought work home with them, at least occasionally. Recently, in a random sample of 400 employed people, 104 said that they bring work home with them, at least occasionally. a. Test whether the true proportion of all employees who bring work home with them has changed from 24%. Use the 5% level of significance.

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