A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 323 people over the age of 55, 73 dream in black and white, and among 315people under the age of 25, 18 dream in black and white. Use a 0.01 significance level to test the claim that the proportion of people over 55 who dream in black and whiteproportion for those under 25. Complete parts (a) through (c) below.greater than theIdentify the test statistic.z= 6.10(Round to two decimal places as needed.)Identify the P-value.@2P-value=0.000(Round to three decimal places as needed.)What is the conclusion based on the hypothesis test?View an example Get more help.H₁: P₁ P₂WSThe P-value is less than the significance level of a 0.01, sodream in black and white is greater than the proportion for those under 25.rejectb. Test the claim by constructing an appropriate confidence interval.The 98% confidence interval is < (P₁-P₂) <(Round to three decimal places as needed.)XHnmand380EDC$411RF%5VTGA6B1H₁: P₁ P₂%Ystv ♫ Ⓡ SMacBook AirI'Hthe null hypothesis. There is sufficient evidence to support the claim that the proportion of people over 55 who7■N-34UJ√ V8AMDIIFOIK1, (1)(9H6<IDOF9OMore>OLcommandF10PH₁: Pg #P₂L;Clear allIoptionF11{[?1+11Check answer200m43F12}1delete1returnshiftdrew

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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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The accompanying table gives amounts of arsenic in samples of brown rice from three different states. The amounts are in micrograms of arsenic and all samples have the same serving size. The data are from the Food and Drug Administration. Use a 0.05 significance level to test the claim that the three samples are from populations with the same mean. Do the amounts of arsenic appear to be different in the different states? Given that the amounts of arsenic in the samples from Texas have the highest mean, can we conclude that brown rice from Texas poses the greatest health problem? Click the icon to view the data. Arsenic Amounts Arkansas California Texas Determine the test statistic. 4.81 4.91 5.02 5.44 5.44 5.42 5.63 5.61 5.63 5.86 5.96 6.06 1.45 3.66 4.04 4.49 4.93 5.08 5.29 5.43 5.42 5.46 5.58 5.55 5.57 5.78 6.64 6.93 6.89 6.85 7.09 7.30 7.49 7.55 7.71 7.72 The test statistic is (Round to two decimal places as needed.) Print Done
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In marketing children’s products, it is extremely important to produce television commercials that hold the attention of the children who view them. A psychologist hired by a marketing research firm wants to determine whether differences in attention span exist among advertisements for different types of products. A number of children under 10 years of age are asked to watch one 60-second commercial for one of three types of products, and their attention spans are measured in seconds. The results are shown in the accompanying table: Type of Product Advertised Toys/Games Food/Candy Children’s Clothing 42 55 30 45 58 35 48 52 42 40 60 32 50 57 38 b). What type of error is possible and describe this error in terms of the problem.
An online shop owner believes that 85% of her customers will want to go into a real store. She surveyed 50 customers and 39 said they want to visit a store. Is the owners claim correct? Use a 0.01 level of significance.
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.
Average prices (in dollars) were recorded for three types of beverage across all 8 major Australian states and territories. In how many states/territories is the average price of a cappuccino higher than the average price of a flat white? Select...
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)
a. Write the claim identifying H0 Ha B.find P value C. Decided whether to reject or fail d. Interpret the decision in the context
A categorical variable has three categories, with the frequencies of occurrence below. a. Compute the percentage of values in each category. b. What conclusions can you reach concerning the categories? Category Frequency A 9 B 26 C 15
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The two-way table given shows the results from a survey of pet owners. Owns a Dog Does Not Own a Dog Total Owns a Cat 54 21 75 Does Not Own a Cat 81 39 120 Total 135 60 195 Does the data show an association between owning a dog and owning a cat
An industrial-organizational psychologist is interested in discovering the relationship between the tempo of preferred music that is played in a workplace and employee mood. Employees chose their favorite song on an MP3 player and then reported their moods when listening to that piece of music. A total of 10 participants were asked individually and brought in their own MP3 players; the least number of songs on an employee's MP3 player was 350. The sample data are presented as a scatterplot below. The psychologist wants to use a Pearson correlation coefficient to analyze the relationship. Considering the assumptions for this statistic, which of these statements is the correct course of action? A. The researcher has chosen the wrong statistic to represent this relationship. B. The researcher has violated a robust assumption and should be able to calculate r. C. The researcher has chosen the right statistic because all the assumptions are valid. D. The researcher has violated a…

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