A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 295 people over the age of 55, 62 dream in black and white, and among 292people under the age of 25, 13 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than theproportion for those under 25. Complete parts (a) through (c) below.VIV UV niv ugoעץ יט וקווסס uit ~~ w טוקוunס סחורVVTIOIUVI MIhypothesis test?OA. Ho: P₁ P2H₁: P₁ = P2OD. Ho: P1 P2H₁: P₁ P₂Identify the test statistic.z = 6.01(Round to two decimal places as needed.)Identify the P-value.P-value = 0.000(Round to three decimal places as needed.)What is the conclusion based on the hypothesis test?OB. Ho: P1H₁: P₁P2P2OE. Ho: P₁ SP₂H₁: P₁ P₂b. Test the claim by constructing an appropriate confidence interval.The 90% confidence interval is < (P₁-P₂) <-(Round to three decimal places as needed.)...e sample is sample pie ayu viC. Ho: P₁ = P₂H₁: P₁P2OF. Ho: P₁ P2H₁: P₁ P₂OLY TYPE SThe P-value is less than the significance level of a = 0.05, so reject the null hypothesis. There is sufficient evidence to support the claim that the proportion of people over 55 whodream in black and white is greater than the proportion for those under 25.

Claim: The proportion of people over 55 who dream in black and white is greater than the proportion…

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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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
Is there a relationship between test scores of persons who have gone through a certain job training program and their subsequent performance on the job. Poor Fair Good Total Below avg. 67 64 25 156 Average 42 76 56 174 Above 10 23 37 70 Totals 119 163 118 400 State the conclusion.
Obtain the five number summary for the given data. The test scores of 30 students are listed below. Find the five-number summary. 32 42 45 48 52 55 57 61 62 65 80 81 83 85 85 87 90 94 96 98 Send data to Excel O Min=32, Q, =61, Q,= 70, Q, = 83, Max = 98 Min = 32, Q, = 61, Q, = 72, Q,=83, Max = 98 O Min = 32, Q, = 59, Q, = 72, Q, = 83, Max = 98 O Min = 32, Q, = 59, Q, = 70, Q, = 83, Max = 98 Continue
Here are the reading scores (out of 60) of 20 randomly selected kindergarten kids in a district 34, 26, 46, 46, 43, 42, 45, 39, 43, 32, 15, 36, 29, 39, 41, 27, 38, 58, 31, 35 Find the 5-number summary for the data set. Min: 15 Q1: OF 58 Find the IQR of the data set. IQR: 11.7 x Find Q3+1.5(IQR).! Q3+1.5(IQR) = 60.6 X Median: 38.5 38.5 Q3: 43 043 Max: 58 Are there any high outliers, that is, are there any numbers in the data set higher than Q3+1.5(IQR)? No, there are no high outliers ✓ OB Find Q₁-1.5(IQR). Q₁-1.5(IQR) Are there any low outliers, that is, are there any numbers in the data set higher than Q₁— 1.5(IQR)? No, there are no low outliers ✓ = 25.3 X
A statistic is a number that... describes a characteristic of a population of scores. describes a characteristic of a sample of scores. is never used to estimate or make a decision about a parameter. summarizes all the individuals a researcher is interested in.
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…
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Section 9.1 Question #5 A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 302 people over the age of 55, 80 dream in black and white, and among 296 people under the age of 25, 15 dream in black and white. Use a 0.05 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater 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 people under the age of 25. What are the null and alternative hypotheses for the hypothesis test? A. H0: p1 = p2 H1: p1 < p2 B. H0: p1 = p2 H1: p1 > p2 C. H0: p1 ≤ p2 H1: p1 ≠ p2 D. H0: p1 ≠ p2 H1: p1 = p2 E. H0: p1 ≥ p2 H1: p1 ≠ p2 F. H0: p1 = p2 H1: p1 ≠ p2 Identify the test statistic. z= ___________ (Round to…
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The table shows data about student involvement in extracurricular activities at a local high school. Extracurricular Activities Involved in Not Involved in Activities Activities Totals Male 112 145 257 Female 139 120 259 Totals 251 265 516 P(femalel involved in activities)? 265 516 139 251 251 516 139 516

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