A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 294people over the age of 55, 63 dream in black and white, and among 300 people under the age of 25, 19 dream in black andwhite. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white isgreater than the proportion for those under 25. Complete parts (a) through (c) below.a. Test the claim using a hypothesis test.Consider the first sample to be the sample of people over the age of 55 and the second sample to be the sample of peopleunder the age of 25. What are the null and alternative hypotheses for the hypothesis test?A. Ho: P₁ = P2H₁: P₁P2D. Ho: P₁ P2H₁: P₁ P2OB. Ho: P1 P2H₁: P₁P2O E. Ho: P1H₁: P₁P2P2O C. Ho: P₁ P2H₁: P₁ = P2OF. Ho: P₁ P2H₁: P₁P2

Let, p1 = Proportion of people over 55 who dream in black and white p2 = Proportion of people under…

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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A recent study has shown that approximately 31.6% of Canadians are considered 'supertasters,' or people who experience the sense of taste with greater intensity than average. Consider a sample of 23 Canadians, each of whom are asked to indicate if they are a supertaster or not. Please use this information to answer the following questions.a. How many of the Canadians sampled can we expect to be supertasters?Answer:_______people. Round to at least FOUR digits after the decimal if necessary. b. What is the standard deviation of the number of people sampled who are supertasters?Answer:______people. Round to at least FOUR digits after the decimal if necessary.
Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 3 females and 3 males and measured their MRI counts and IQ scores. The data is reported on the right. Females Males MRI IQ MRI 10 866,664 132 965,355 132 790,620 135 1,001,121 141 856,473 141 1,079,550 135 O Treat the MRI count as the explanatory variable. Compute the linear correlation coefficient between MRI count and IQ for both the males and the females. Do you believe that MRI count and IQ are linearly related? The linear correlation coefficient for females is. The linear correlation coefficient for males is. (Round to three decimal places as needed.) Are MRI count and IQ linearly related? linear The linear correlation coefficient for females is close to ▼so relation exists between MRI count and IQ for females. The linear correlation coefficient for linear relation exists between MRI count and IQ males is close to for males. SO
Professors collected data consisting of eye color and gender of statistics students. Among 912 male students, 276 had blue eyes. Among 1102 female students, 372 had blue eyes. Use a 0.01 significance level to test the claim that the proportions of blue eyes are the same for males and females. Complete parts (a) through (c) below. Consider the first sample to be the sample of males and the second sample to be the sample of females. O D. Ho: P₁ = P₂ H₁: P₁ P₂ Identify the test statistic. Z= -1.67 (Round to two decimal places as needed.) Identify the P-value. P-value = 0.095 (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? O E. Ho: P₁ P₂ H₁: P₁ P₂ The 99% confidence interval is -0.089 (P₁-P₂) < 0.019. (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? F₁ H₂= P₁ = P₂ H₁: P₁ P₂ The P-value is greater than the significance level of α = 0.01, so fail to reject the null hypothesis. There is not…
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The Student Union President conducted a survey to estimate the proportion of first year students who participated in the social activities organized by the Student Union. Which of the following surveying options does NOT affect the presidents ability to generalize the survey to all first year students. The president put the survey on the Student Union webpage a Monday and collected the responses at the end of the week. All of the other options present a problem for generalizing the results. The president polled all students coming out of the Student Union on a given Monday. The freshmen class consists of 3000 students. A random sample of only 300 were sent a survey. Only 150 responded. The survey was sent only to first year students enrolled in statistics courses because all students need to satisfy a statistics general education requirement.
8
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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.
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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
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