1. Explain when you use a chi-square test.2. A report about an isolated community claims there are more newborn females than males,although we assume equal frequencies for each. Records indicate 96 boys and 127 girls born inthe past month. Follow and list the eight steps for hypothesis testing to determine if there is astatistically significant difference.3. For the observed frequencies in the table below, conduct a chi-square test to determine ifthere is a relationship between the variables. Follow and list all 8 steps for hypothesis testing.You can use SPSS to complete this one, or you can complete it by hand.Sleep/Exam OutcomesSleptPassDid not Sleep4020Did not Pass510

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Answered: 1. Explain when you use a chi-square…

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 Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
Please help with this question. Answer all parts please.
Two sections of statistics are offered, the first at 8 a.m. and the second at 10 a.m. The 8 a.m. section has 25 women, and the 10 a.m. section has 15 women. A student claims this is evidence that women prefer earlier statistics classes than men do. What information is missing that might contradict this claim? Question content area bottom Part 1 Choose the best answer below. A. The professor may be female in one class and male in the other, which could affect the female students' class preference. B. The percentage of female students in the two classes is unknown. There may be more females in the 8 a.m. because there are more students in the 8 a.m. class than the 10 a.m. class. This claim could be true only if the classes were the same size. C. The age and class standing of the students is unknown. Older female students may prefer later classes, so it may be only younger female students who prefer earlier classes. D. No information is…
In a 25-unit sample of a variable with a population average of 50, the Mean was 53 and the variance was 100. Which of the following is the test statistic for hypothesis testing? Please select one: a. 2.5 b. 1 c. 0.75 d. 3 e. 1.5
Consider the following data: 5,−5,5,−5,−5,14,55,−5,5,−5,−5,14,5 Copy Data Step 1 of 3 : Calculate the value of the sample variance. Round your answer to one decimal place.
Please help by showing all workings and explanations
Which of the following is NOT a voluntary response sample? Choose the correct answer below. OA. A survey is taken at a mall by asking passersby if they will fill out the survey. OB. A local dentist asks her patients to fill out a questionnaire and mail it back to determine the quality of the care received during an office visit. OC. A radio station asks for call-in responses to a question concerning city recycling. O D. Quiz scores from a college level statistics course are analyzed to determine student progress.
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Please solve the Statistics Question in 30 minutes with an explanation.
Consider a sample with data values of 7, 19, 8, 15, and 11. Compute the z-score for each of the five observations. z-score for 7 z-score for 19 z-score for 8 z-score for 15 z-score for 11 Need Help? Read It

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