MRSA A study involved 2121 patients who were MRSA (methicillin-resistant staphylococcus aureus) carriers. Upon discharge from the hospital, all patients were given information on how to avoid infection. 1058 patients were randomly assigned special cleaning products and told to use them for six months. At the end of the study period, 98 of the 1063 patients in the education-only group developed a MRSA infection while 67 of the 1058 patients in the deep-clean group developed a MRSA infection. PART 1 Developed MRSA After Discharge Yes No Total Education-only 98 965 1063 Deep-cleaning routine 67 991 1058 Totals 165 1956 2121 On your own piece of paper, compute the expected values for each of the data cells, showing your work. (Please identify which cell those expected values belong in!) Then take a picture of your work and upload it where indicated. PART 2 Compute each component of the Chi-square statistic, showing your work on your own piece of paper. Then use those components to find the value of Chi-square. Take a picture of your work and upload it where indicated. PART 3 Calculate the degrees of freedom for this test and put the answer in the answer box. Just the number! PART 4 Use X2cdf to find the P-value associated with your Chi-square value from part (1.2) with its df from part (1.3). Please be sure to write the calculator command with appropriate inputs followed by this P-value.
MRSA A study involved 2121 patients who were MRSA (methicillin-resistant staphylococcus aureus) carriers. Upon discharge from the hospital, all patients were given information on how to avoid infection. 1058 patients were randomly assigned special cleaning products and told to use them for six months. At the end of the study period, 98 of the 1063 patients in the education-only group developed a MRSA infection while 67 of the 1058 patients in the deep-clean group developed a MRSA infection. PART 1 Developed MRSA After Discharge Yes No Total Education-only 98 965 1063 Deep-cleaning routine 67 991 1058 Totals 165 1956 2121 On your own piece of paper, compute the expected values for each of the data cells, showing your work. (Please identify which cell those expected values belong in!) Then take a picture of your work and upload it where indicated. PART 2 Compute each component of the Chi-square statistic, showing your work on your own piece of paper. Then use those components to find the value of Chi-square. Take a picture of your work and upload it where indicated. PART 3 Calculate the degrees of freedom for this test and put the answer in the answer box. Just the number! PART 4 Use X2cdf to find the P-value associated with your Chi-square value from part (1.2) with its df from part (1.3). Please be sure to write the calculator command with appropriate inputs followed by this P-value.
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 3SE: What is an experiment?
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I need hep with these problems.. Thanks in advance :)
Transcribed Image Text:MRSA
A study involved 2121 patients who were MRSA (methicillin-resistant staphylococcus aureus)
carriers. Upon discharge from the hospital, all patients were given information on how to avoid
infection. 1058 patients were randomly assigned special cleaning products and told to use them
for six months. At the end of the study period, 98 of the 1063 patients in the education-only group
developed a MRSA infection while 67 of the 1058 patients in the deep-clean group developed a
MRSA infection.
PART 1
Developed MRSA After Discharge
Yes
No
Total
Education-only
98
965
1063
Deep-cleaning routine
67
991
1058
Totals
165
1956
2121
On your own piece of paper, compute the expected values for each of the data cells, showing your
work. (Please identify which cell those expected values belong in!) Then take a picture of your work
and upload it where indicated.
PART 2
Compute each component of the Chi-square statistic, showing your work on your own piece of
paper. Then use those components to find the value of Chi-square. Take a picture of your work
and upload it where indicated.
PART 3
Calculate the degrees of freedom for this test and put the answer in the answer box. Just the
number!
PART 4
Use X2cdf to find the P-value associated with your Chi-square value from part (1.2) with its df from
part (1.3). Please be sure to write the calculator command with appropriate inputs followed by this
P-value.
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