Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes and results are given below for Friday's on the 6th of a month and Friday's on the following 13th of the same month. Use a 0.5 significance level to test the claim that when the 13th day of a month falls on a Friday the numbers of hospital admissions for motor vehicle crashes are not affected. Friday the 6th: 10, 5, 11, 11, 3, 4 Friday the 13th: 14, 11, 14, 10, 5, 11 1. Test statistic is ? 2. Critical value is ? 3. State the result of the test.
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Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes and results are given below for Friday's on the 6th of a month and Friday's on the following 13th of the same month. Use a 0.5 significance level to test the claim that when the 13th day of a month falls on a Friday the numbers of hospital admissions for motor vehicle crashes are not affected.
Friday the 6th: 10, 5, 11, 11, 3, 4
Friday the 13th: 14, 11, 14, 10, 5, 11
1. Test statistic is ?
2. Critical value is ?
3. State the result of the test.
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- A researcher collects data from 30 different individuals and wants to understand the correlation between income and education. The degrees of freedom for the analysis would be?A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 298 people over the age of 55, 62 dream in black and white, and among 282 people under the age of 25, 20 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 white is greater than the proportion for those under 25. Complete parts (a) through (c) below. a) Determine the hypothesis, Test statistic, and P-value b)Test the claim by constructing an appropriate confidence interval. c) An explanation given for the results is that those over the age of 55 grew up exposed to media that was mostly displayed in black and white. Can these results be used to verify that explanation? Use this information to determine whether the results can be used to verify the black and white media explanation.A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 307 people over the age of 55, 68 dream in black and white, and among 313 people under the age of 25, 12 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 study was conducted to determine the proportion of people who dream in black and white instead of color. Among 290 people over the age of 55, 62 dream in black and white, and among 297 people under the age of 25, 11 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 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. Ho: P₁ = P2 H₁: P₁ P2 O D. Ho: P1 P₂ H₁: P₁ = P2 Identify the test statistic. Z= (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? B. Ho: P₁ P2 H₁: P₁ P2 Because the confidence…A researcher wants to compare the effectiveness of three different teaching methods (A, B, and C) on exam scores. The researcher gathers exam scores from 20 students for each teaching method, and wants to determine if there is a significant difference in the mean exam scores between the three teaching methods. What test can the researcher use to answer this question?12.2.84 The number of successes and the sample size for a simple random sample from a population are given below. x = 6, n = 200, Ho:p= 0.02, Hạ: p# 0.02, a = 0.05 a. Determine the sample proportion. b. Decide whether using the one-proportion z-test is appropriate. c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test. Click here to view a table of areas under the standard normal curve for negative values of z. Click here to view a table of areas under the standard normal curve for positive values of z. a. The sample proportion is. (Type an integer or a decimal. Do not round.)
- A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 317 people over the age of 55, 65 dream in black and white, and among 287 people under the age of 25, 11 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 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 altemative hypotheses for the hypothesis test? O A. Ho P1 sP2 H P, P2 O B. Ho P1 = P2 H, P, #P2 O C. H, P, P2 H, P, = P2 O D. Ho P1 =P2 H PqIn 2014, approximately 2% of hourly rate workers were being paid at the federal minimum wage level. Would federal legislation to increase the minimum wage have a greater effect on the mean or the median income of all workers? O Mean OMedianBlank are more representative of a population, but blank are easier to obtainA study was conducted to determine the proportion of people who dream in black and white instead of color. Among 321 people over the age of 55, 77 dream in black and white, and among 311 people under the age of 25, 13 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 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. Ho: P1 P2 H₁: P₁ P2 OD. Ho: P1 P2 Н1:01A study was conducted to determine the proportion of people who dream in black and white instead of color. Among 297 people over the age of 55, 75 dream in black and white, and among 310 people under the age of 25, 19 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. Identify the test statistic. z= 6.51 (Round to two decimal places as needed.) Identify the P-value. P-value = 3.770o (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is greater than the significance level of a = 0.05, so fail to reject the null hypothesis. There is insufficient evidence to support the claim that the proportion of people over 55 who dream in black and white is greater than the proportion for those under 25. b. Test the claim by constructing an appropriate confidence…In a recent survey [YouGov, 11th–16th June 2020], 1088 adults were asked (amongst other questions) if they thought Watford counted as part of London. The following excerpt from the results shows the number of survey participants in different age categories and the percentage of them saying that they did consider Watford as part of London. Age 18-24 25-49 50–64 65+Number of participants 124 544 247 173 Percentage saying Watford is in London 31 34 15 19SEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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