Answer Happy

Question 3 0/36 pts321 Details Assume the number of people who survived a sinking ship based on class and sex is in the table below. Is there enough evidence to show that the class and the gender of a person who survive a sinking ship are dependent? Test at the 5% level. class female male Row Total 1st 132 61 193 class 2nd 94 26 120 class 3rd 78 58 136 class Column Total 304 145 449 H: Hypotheses Ho: Select an answer ✓and Select an answer ✓are Select an answer HA: Select an answer and Select an answer vare Select an answer A: Assumptions . In this problem Select an answer data were collected for Select an answer variable(s) from ? ✓sample(s). • Which of the following assumptions must be checked? Check all that apply. ON >=20n All expected counts are less than 5 ON< 20n All observed counts are less than 5 Population standard deviations are known All observed counts are at least 5 All sample sizes are at least 30 Population standard deviations are unknown All expected counts are at least 5 Check the assumptions: 1. Enter the matrix of expected values. Round values to 2 decimal places: • Are all of the values in the matrix of expected values greater than or equal to 5?? 2. No N is given, we will assume N? ~ N: Name the test
N: Name the test The conditions are met to use a Select an answer T: Test Statistic The formula set up of the first and last term of the test statistic is as follows: Round initial values to 2 decimal places: (OE) X² = E )^2/ = + ... + ( E Final answer from technology rounded to 2 decimal places: x² O: Obtain the P-value Report the final answer to 4 decimal places. It is possible when rounded that a p-value is 0.0000 P-value = M: Make a decision )^2/ we Select an answer. S: State a conclustion • There Select an answer significant evidence to conclude that Select an answer and Select an answer ✓are Select an answer for Select an answer ✓people who survive a sinking ship. Question Help: Video 1 Video 2 Message instructor Submit Question Jump to Answer ● Question 3 Part 2 0/42 pts321 Details Researchers watched dolphin groups off the coast of Ireland to determine what activities the dolphin groups partake in at certain times of the day. The data in the table below represent the number of dolphin groups that were partaking in an activity at certain time periods of the day. Is there enough evidence to show that the activity and the time period of the day are dependent for dolphin groups? Test at the 6% level. noon afternoon evening Row Totals activity travel morning 7 13 13 42 feed 29 6 57 100 social 38 9 11 66 Column Totals 74 28 81 208 H: Hypotheses Ho: Select an answer Select an answer are ✓ are HA: Select an answer Select an answer A: Assumptions Since the p-value ? ✓ 9 8 8 25 and Select an answer and Select an answer
A: Assumptions • In this problem Select an answer data were collected for Select an answer ✓ variable(s) from ?sample(s). Which of the following assumptions must be checked? . Check all that apply. All observed counts are at least 5 All expected counts are at least 5 ON <20n Population standard deviations are known Population standard deviations are unknown ON >=20n All expected counts are less than 5 All sample sizes are at least 30 All observed counts are less than 5 Check the assumptions: 1. Enter the matrix of expected values (round values to 2 decimal places): Are all of the values in the matrix of expected values greater than or equal to 5? ? 2. No N is given, we will assume N? N: Name the test The conditions are met to use a Select an answer T: Test Statistic The formula set up of the first and last term of the test statistic are as follows: Round initial values to 2 decimal places: x – Σ ( (0 - E)² E = ( ... + Final answer from technology rounded to 2 decimal places: x² = O: Obtain the P-value Report the final answer to 4 decimal places. It t is possible when rounded that a p-value is 0.0000 P-value = M: Make a decision )^2/ 2
M: Make a decision Since the p-value ? ✓ ● S: State a conclustion • There Select an answer significant evidence to conclude that Select an answer and Select an answer Select an answer for Select an answer Question Help: Video 1 Video 2 Message instructor Submit Question Jump to Answer Question 3 Part 3 0/36 pts 3 1 0 Details Is there a relationship between autism and what an infant is fed? To determine if there is, a researcher asked a random sample of mothers what they had fed their infant and they also recorded whether or not the child was autistic. The data are in the table below. Do the data provide enough evidence to show that that what an infant is fed and autism are dependent? Test at the 2% level. what an infant is fed yes no 422 breastmilk 5 formula with DHA/ARA 6 1155 formula without DHA/ARA 14 527 Column Total 25 2104 ✓and Select an answer ✓are Select an answer and Select an answer are Select an answer data were collected for Select an answer variable(s) from H: Hypotheses we Select an answer ✓ ✓are ✓dolphin groups off the coast of Ireland. Ho: Select an answer HA: Select an answer . In this problem Select an answer Select an answer ✓ sample(s). • Which of the following assumptions must be checked? Check all that apply. All expected counts are at least 5 JN >= 20n Population standard deviations are unknown All expected counts are less than 5 ON< 20n Population standard deviations are known All observed counts are less than 5 All sample sizes are at least 30 All observed counts are at least 5 Check the assumptions: A: Assumptions Row Total 427 1161 541 2129
All observed counts are at least 5 Check the assumptions: 1. Enter the matrix of expected values. Round values to 2 decimal places: • Are all of the values in the matrix of expected values greater than or equal to 5? ? ✓ 2. No N is given, we will assume N ? ✓ N: Name the test The conditions are met to use a Select an answer T: Test Statistic The formula set up of the first and last term of the test statistic is as follows: Round initial values to 2 decimal places: (O - E)² x? = Σ| ^2/ )^2/ E Final answer from technology rounded to 2 decimal places: O: Obtain the P-value Report the final answer to 4 decimal places. It is possible when rounded that a p-value is 0.0000 P-value= M: Make a decision. Since the p-value ? ✓ S: State conclustion There Select an answer and Select an answer we Select an answer. significant evidence to conclude that Select an answer ✓are Select an answer for Select an answer Video 2 Message instructor Question Help: Video 1 Submit Question Jump to Answer ✓infants.