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- In a study, the effects of the mane of a male lion as a signal of quality to mates and rivals was explored. Four life-sized dummies of male lions provided a tool for testing female response to the unfamiliar lions whose manes varied by length (long or short) and color (blonde or dark). The female lions were observed to see whether they approached each of the four life-sized dummies. Complete parts (a) through (e) below. a. Identify the experimental units. Choose the correct answer below. The female lions The male dummies The mane colors The mane lengths Part 2 b. Identify the response variable. Choose the correct answer below. A. Whether or not (yes or no) the mane length affected how the female lions reacted to a male dummy. B. Whether or not (yes or no) the female lions approached the same dummies. C. Whether or not (yes or no) the female lions approached a male dummy. D. Whether or not…Let A= [4,7] and B= (1,5) find the following a. A U B b. A n B c. B-A d. A n B^cYou work for an insurance company and are studying the relationship between types of crashes and the vehicles involved. As part of your study, you randomly select 3632 vehicle crashes and organize the resulting data as shown in the contigency table. At α=0.01, can you conclude that the type of crash depends on the type of vehicle? Complete parts (a) through (d). Vehicle Type of crash Car Pickup Sport utility Single-vehicle 876 393 342 Multiple-vehicle 1143 475 403 Question content area bottom Part 1 (a) Identify the claim and state the null and alternative hypotheses. H0: The type of crash and the type of vehicle are . Ha: The type of crash and the type of vehicle are . (a) Identify the claim and state the null and alternative hypotheses. H0: The type of crash and the type of vehicle are Ha: The type of crash and the type of vehicle are . The alternative hypothesis is the claim. Part 2 (b) Determine the degrees of…
- According to a Pew report, 14.6% of newly married couples in 2008 reported that their spouse was of another race or ethnicity (CNNLiving, June 7, 2010). In a similar survey in 1980, only 6.8% of newlywed couples reported marrying outside their race or ethnicity. Suppose both of these surveys were conducted on 500 newly married couples. (You may find it useful to reference the appropriate table: z table or t table) Let p1 represent the population proportion in 2008 and p2 the population proportion in 1980. a. Specify the competing hypotheses to test the claim that there is an increase in the proportion of people who marry outside their race or ethnicity. multiple choice 1 H0: p1 − p2 = 0; HA: p1 − p2 ≠ 0 H0: p1 − p2 ≤ 0; HA: p1 − p2 > 0 H0: p1 − p2 ≥ 0; HA: p1 − p2 < 0 b-1. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) b-2. Find the p-value. multiple…According to the Pew report, 14.6% of newly married couples in 2008 reported that their spouse was of another race or ethnicity (CNNLiving, June 7, 2010). In a similar survey in 1980, only 6.8% of newlywed couples reported marrying outside their race or ethnicity. Suppose both of these surveys were conducted on 500 newly married couples. (You may find it useful to reference the appropriate table: z table or t table) Let p1 represent the population proportion in 2008 and p2 the population proportion in 1980. a. Specify the competing hypotheses to test the claim that there is an increase in the proportion of people who marry outside their race or ethnicity. multiple choice 1 H0: p1 − p2 = 0; HA: p1 − p2 ≠ 0 H0: p1 − p2 ≤ 0; HA: p1 − p2 > 0 Correct H0: p1 − p2 ≥ 0; HA: p1 − p2 < 0 b-1. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) b-2. Find the p-value.…According to the Pew report, 14.6% of newly married couples in 2008 reported that their spouse was of another race or ethnicity (CNNLiving, June 7, 2010). In a similar survey in 1980, only 6.8% of newlywed couples reported marrying outside their race or ethnicity. Suppose both of these surveys were conducted on 500 newly married couples. (You may find it useful to reference the appropriate table: z table or t table) Let p1 represent the population proportion in 2008 and p2 the population proportion in 1980. a. Specify the competing hypotheses to test the claim that there is an increase in the proportion of people who marry outside their race or ethnicity. multiple choice 1 H0: p1 − p2 = 0; HA: p1 − p2 ≠ 0 H0: p1 − p2 ≤ 0; HA: p1 − p2 > 0 H0: p1 − p2 ≥ 0; HA: p1 − p2 < 0 b-1. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) b-2. Find the p-value.…
- You work for an insurance company and are studying the relationship between types of crashes and the vehicles involved. As part of your study, you randomly select 3589 vehicle crashes and organize the resulting data as shown in the contigency table. At α=0.10, can you conclude that the type of crash depends on the type of vehicle? Complete parts (a) through (d). Vehicle Type of crash Car Pickup Sport utility Single-vehicle 866 323 340 Multiple-vehicle 1145 487 428 Question content area bottom Part 1 (a) Identify the claim and state the null and alternative hypotheses. H0: The type of crash and the type of vehicle are ▼ independent dependent . Ha: The type of crash and the type of vehicle are ▼ dependent independent . The ▼ alternative hypothesis null hypothesis is the claim.You work for an insurance company and are studying the relationship between types of crashes and the vehicles involved. As part of your study, you randomly select 3589 vehicle crashes and organize the resulting data as shown in the contigency table. At α=0.10, can you conclude that the type of crash depends on the type of vehicle? Complete parts (a) through (d). Vehicle Type of crash Car Pickup Sport utility Single-vehicle 866 323 340 Multiple-vehicle 1145 487 428 Question content area bottom Part 1 (a) Identify the claim and state the null and alternative hypotheses. H0: The type of crash and the type of vehicle are ▼ independent dependent Ha: The type of crash and the type of vehicle are ▼ dependent independent The ▼ alternative hypothesis null hypothesis is the claim. H0: The type of crash and the type of vehicle are Ha: The type of crash and the type of vehicle are Determine…There’s two rows
- A market researcher for an automobile company suspects differences in preferred color between male and female buyers. Advertisements targeted to different groups should take such differences into account, if they exist. The researcher examines the most recent sales information of a particular car that comes in three colors. (You may find it useful to reference the appropriate table: chi- square table or F table) Sex of Automobile Buyer. Male Color Female Silver 477 298 Black 536 308 Red 482 348 a. Choose the competing hypotheses to determine whether color preference depends on the automobile buyer's sex. O Họ Color preference is independent of the automobile buyer's sex.: HA Color preference is dependent on the automobile buyer's sex. O Ho Color preference is dependent on the automobile buyer's sex; HA: Color preference is independent of the automobile buyer's sex. b-1. Calculate the value of the test statistic. (Round the intermediate calculations to at least 4 decimal places and…The value y (in 1982–1984 dollars) of each dollar paid by consumers in each of the years from 1994 through 2008 in a country is represented by the ordered pairs. (1994, 0.675) (1995, 0.654) (1996, 0.643) (1997, 0.618) (1998, 0.611) (1999, 0.599) (2000, 0.585) (2001, 0.562) (2002, 0.559) (2003, 0.539) (2004, 0.529) (2005, 0.513) (2006, 0.493) (2007, 0.482) (2008, 0.462) (b) Use the regression feature of the spreadsheet software program to find a linear model for the data. (Let trepresent time. Round your numerical values to four decimal places.) y = (c) Use the model to predict the value (in 1982–1984 dollars) of 1 dollar paid by consumers in 2010 and in 2011. (Round your answers to two decimal places.)The fingerprint of every finger can be classified into one of three basic patterns: a loop, a whorl, or an arch. Forensic experts have determined that about 65% of all fingers have loops, 30% have whorls, and 5% have arches. Suppose that these percentages are exactly correct and patterns are independent from one finger to the next. Select a person at random and classify each of their fingerprints on both hands. Let X = the number of fingerprints with a loop. (a) Calculate and interpret the mean of X. (b) Calculate and interpret the standard deviation of X.
