A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 313 people over the age of 55, 77 dream inblack and white, and among 292 people under the age of 25, 15 dream in black and white. Use a 0.01 significance level to test the claim that the proportion ofpeople over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below.Tucrury uZ=(Round to two decimal places as needed.)Identify the P-value.P-value=(Round to three decimal places as needed.)What is the conclusion based on the hypothesis test?The P-value isthe significance level of α = 0.01, sothe null hypothesis. There isthe proportion of people over 55 who dream in black and white is greater than the proportion for those under 25.evidence to support the claim that A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 313 people over the age of 55, 77 dream inblack and white, and among 292 people under the age of 25, 15 dream in black and white. Use a 0.01 significance level to test the claim that the proportion ofpeople over 55 who dream in black and white is greater than the proportion for those under 25. Complete parts (a) through (c) below.b. Test the claim by constructing an appropriate confidence interval.The 98% confidence interval is < (P₁-P₂) <(Round to three decimal places as needed.)What is the conclusion based on the confidence interval?Because the confidence interval limits0, it appears that the two proportions arevalues, it appears that the proportion of people over 55 who dream in black and white isBecause the confidence interval limits includeproportion for those under 25.thec. An explanation for the results is that those over the age of 55 grew up exposed to media that was displayed in black and white. Can these results be usedto verify that explanation?

Confidence interval are used to determine the range where the true parameter lies. It calculated…

Answered: A study was conducted to determine the…

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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Health insurer benefits vary by the size of the company. The sample data below show the number of companies providing health insurance for small, medium, and large companies. For the purpose of this study, small companies are companies that have fewer than 100 employees. Medium-sized companies have 100 to 999 employees, and largevcompanies have 1000 or more employees. The questionnaire sent to 225 employees asked whether or not the employee had health insurance and then asked the employee to indicate the size of the company. Health Insurance Size of company Yes No Total Small. 35 15 50 Medium 67 8 75 Large 87 13 100 A. Conduct a test of independence to determine whether health insurance coverage is independent of the size of the company. What is the p-value? Compute the value of the x2 test statistic (to 2 decimal)
Belief in Haunted Places A random sample of 215 college students were asked if they believed that places could be haunted, and 40 responded yes. Estimate the true proportion of college students who believe in the possibility of haunted places with 99% confidence. According to Time magazine, 37% of Americans believe that places can be haunted. Round the answers to at least five decimal places. Use a graphing calculator. <p<
The income of residents of Chicago, IL has a bell shaped and symmetric histogram, with a mean of $65,000 and a S.D. of $13,000. 1) What percentage of residents have an income more than $78,000 or less than $52,000? 2) what percentage of residents have an income between $39,000 and $91,000? 3) What percentage of residents have an income less than $104,000? 4) What percentage have an income more than $65000? 5) Less than $26,000 Hint: you need to draw a curve for each part 1-4, and calculate the mean ± 1, 2, 3 S.D.
How many samples or treatments are here? 490 undergraduate students at a state university in the southwestern region of the United States were surveyed. Each student in the sample was classified according to class standing (freshman, sophomore, junior, or senior) and body are category (body piercings only, tattoos only, both tattoos and body piercings, no body art). Use the data in the accompanying table to determine if there is an association between class standing and body art category. Assume that it is reasonable to regard the sample as representative of the students at this university. Use α = 0.01. Freshman Sophmore Junior Senior Body Piercings 61 7 14 86 Only Tattoos 43 11 10 64 Only Mildly Piercings and Tattoos 20 9 7…
Research Study: The following data collected lists the typing speed as measured by a standard typing test for 5 college students, along with the number of pages they had to type for their project.Instructions: Use the data collected to compute the values listed in Table#1. Use .05 significance. Research Data Collected: Student Number of pages typed Typing speed Chris 37 70 Mary 6 54 Paul 12 25 Juan 34 42 Marcelo 16 35 Table #1 1. SP 2. r2 3. ∑x 4. ∑y 5. SSx 6. SSy 7. a 8. b 9. F ratio 10. F critical (value from F table)
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lecture(12.10c): When we are comparing three or more groups we use the.....................................When we want to uncover a relationship between two assessments ,we use the-----------------------------.and we use the -----------------------to determine if two categories are related.
advocacy organization surveys 966 citizens of country A and 186 of them reported being born in another country. Similarly, 177 out of 1213 citizens of country B reported being foreign-born. The researchers want to test if the proportions of foreign born are the e in country B as in country A. Complete parts a through c below. What is the difference in the sample proportions, p, - p2, of foreign born residents from both countries? Assume p, is the proportion of foreign born residents from country A and p, is the proportion of foreign born residents from country B. difference in the sample proportions, p1-P2, is und to three decimal places as needed )
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Please answer all parts.

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