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Measurements of the weights are taken on a number of patients before and after an extensive...
Question number 11 A physician want to see if there was a difference in the average...
Question number 11 A physician want to see if there was a difference in the average smokers' daily cigarette consumption after wearing a nicotine patch. The physician sets up a study to track daily smoking consumption. They give the patients a placebo patch that did not contain nicotine for 4 weeks, then a nicotine patch for the following 4 weeks. Test to see if there was a difference in the average smoker's daily cigarette consumption using a = 0.01. The...
The following information was obtained from paired samples. Cheap Airline and Discount Airline fly around the...
The following information was obtained from paired samples. Cheap Airline and Discount Airline fly around the U.S. from their hub in Sanford, Florida. A sample of roundtrip ticket prices of 10 cities where these two companies fly is taken The following is the Excel analysis conducted EXHIBIT 4 Standard deviation for the difference: Sc = 4 Houd - 0 Ho Hd = 0 Ho: 10 = 0 t-Test: Paired Two Sample for Means Mean Variance Observations Pearson Correlation Hypothesized Mean...
Each of the nurses took the blood pressure of each of the patients and then the...
Each of the nurses took the blood pressure of each of the
patients and then the results were compared.
Below is the analysis of each researcher.
a) Sets the null and alternating hypothesis to be tested in this
case
b) Determines which conclusion each researcher should reach,
according to its analysis. Explain
c) Which of the researchers performed the correct analysis
2. 3 Arterial pressure #1 #2 Patient Nurse Nurse 1 117 120 105 110 108 110 4 94 98...
Lead component in water alters the flavor and high concentration of lead can pose a serious...
Lead component in water alters the flavor and high concentration of lead can pose a serious health hazard. Ten pairs of data were taken measuring lead concentration in bottom water and surface water. Does the data suggest that the true average concentration in the bottom water is different than that of surface water? The results of the study are shown below. Location Bottom Surface t-Test: Paired Two Sample for Means 0.530 0.515 Bottom Surface 0.366 0.338 Mean 0.6649 0.5845 0.667...
Please help me, I wasn't sure which test to use so I did both of them on excel. Please let me know which is correct and answer A-C. I will give the answer a thumbs up if you can get back to me asa...
Please help me, I wasn't sure which test to use so I did both of
them on excel. Please let me know which is correct and answer A-C.
I will give the answer a thumbs up if you can get back to me
asap.
The physicians also believe that people who are obese are more
likely to die earlier than those who are not. Again use the data in
the Framingham sample to test this theory by comparing the mean...
t-test: two-sample assuming equal variances Subject ID Height Mean 9.9 68.85 Variance 39.0421053 35.0815789 Observations 20...
t-test: two-sample assuming equal variances Subject ID Height Mean 9.9 68.85 Variance 39.0421053 35.0815789 Observations 20 20 Pooled Variance 37.0618421 Hypothesized Mean Difference 0 df 38 t Stat -30.621066 P(T<=t) one-tail 1.0856E-28 t Critical one-tail 1.68595446 P(T<=t) two-tail 2.1711E-28 t Critical two-tail 2.02439416 From your results, please report the following: Variable 1 Mean: Variable 2 Mean: Two-tailed p-value: Is your p-value significant? (alpha=0.05) If your results are significant/not significant, what can you conclude from your data? (i.e. is there a...
Please use this information to answer the next questions An investigation was launched to address the...
Please use this information to answer the next questions An investigation was launched to address the effectiveness of an antibacterial soup in reducing operating room contamination. The new soup was fosted in a sample of eight operating rooms in the greater Seattle res Data was collected on the level of operating room contamination her values indicate greater contaminar on in these light operating rooms before the new soap was used and after the new soap was used Output are based...
t-Test: Two-Sample Assuming Equal Variances Variable 1 Variable 2 Mean 12.89795918 17.66666667 Variance 161.2185374 567.8266667 Observations...
t-Test: Two-Sample Assuming Equal Variances Variable 1 Variable 2 Mean 12.89795918 17.66666667 Variance 161.2185374 567.8266667 Observations 49 51 Pooled Variance 368.6716646 Hypothesized Mean Difference 0 Df 98 t Stat -1.241549191 P(T<=t) one-tail 0.108683158 t Critical one-tail 1.660551217 P(T<=t) two-tail 0.217366316 t Critical two-tail 1.984467455 Is there a significant difference between the two sample means? If you answer, “yes,” what is your reasoning? If you answer, “no,” what is your reasoning? Please state the conclusion, or your interpretation of the results in terms...
13: A national survey found that the average number of banking services used was 4.1 per...
13: A national survey found that the average number of banking services used was 4.1 per month. An Analyst for the Malco State Bank sampled its customers, and generated the following output for a one sample test in Data Analysis. If a=.05, do the customers at Malce State Bank use banking services more than the national average of 4.1 times per month? Sample Hypothesized mean 4.1 5.026 4.736 Mean Variance Observations df t Stat P(TC=t) one-tail t Critical one-tail P(TC=t)...
Stress between males and females *Note: alpha = .001 1 t-Test: Two-Sample Assuming Unequal Variances Female...
Stress between males and females
*Note: alpha = .001
1 t-Test: Two-Sample Assuming Unequal Variances Female Male 4 Mean 5 Variance 6 Observations 7 Hypothesized Mean Difference 3.655737705 3.52857143 1.296174863 1.12236025 70 61 8 df 9 t Stat 10 P(T-t) one-tail 11 t Critical one-tail 12 P(T<-t) two-tail 13 t Critical two-tail 124 0.658596658 0.255687918 3.157259054 0.511375836 3.370720124 Student Survey Data (2 Sample t-test) 1. Test Decision & Basis 2. Interpretation of Test Decision:
Question number 11 A physician want to see if there was a difference in the average smokers' daily cigarette consumption after wearing a nicotine patch. The physician sets up a study to track daily smoking consumption. They give the patients a placebo patch that did not contain nicotine for 4 weeks, then a nicotine patch for the following 4 weeks. Test to see if there was a difference in the average smoker's daily cigarette consumption using a = 0.01. The...
The following information was obtained from paired samples. Cheap Airline and Discount Airline fly around the U.S. from their hub in Sanford, Florida. A sample of roundtrip ticket prices of 10 cities where these two companies fly is taken The following is the Excel analysis conducted EXHIBIT 4 Standard deviation for the difference: Sc = 4 Houd - 0 Ho Hd = 0 Ho: 10 = 0 t-Test: Paired Two Sample for Means Mean Variance Observations Pearson Correlation Hypothesized Mean...
Each of the nurses took the blood pressure of each of the
patients and then the results were compared.
Below is the analysis of each researcher.
a) Sets the null and alternating hypothesis to be tested in this
case
b) Determines which conclusion each researcher should reach,
according to its analysis. Explain
c) Which of the researchers performed the correct analysis
2. 3 Arterial pressure #1 #2 Patient Nurse Nurse 1 117 120 105 110 108 110 4 94 98...
Lead component in water alters the flavor and high concentration of lead can pose a serious health hazard. Ten pairs of data were taken measuring lead concentration in bottom water and surface water. Does the data suggest that the true average concentration in the bottom water is different than that of surface water? The results of the study are shown below. Location Bottom Surface t-Test: Paired Two Sample for Means 0.530 0.515 Bottom Surface 0.366 0.338 Mean 0.6649 0.5845 0.667...
Please help me, I wasn't sure which test to use so I did both of
them on excel. Please let me know which is correct and answer A-C.
I will give the answer a thumbs up if you can get back to me
asap.
The physicians also believe that people who are obese are more
likely to die earlier than those who are not. Again use the data in
the Framingham sample to test this theory by comparing the mean...
Please use this information to answer the next questions An investigation was launched to address the effectiveness of an antibacterial soup in reducing operating room contamination. The new soup was fosted in a sample of eight operating rooms in the greater Seattle res Data was collected on the level of operating room contamination her values indicate greater contaminar on in these light operating rooms before the new soap was used and after the new soap was used Output are based...
13: A national survey found that the average number of banking services used was 4.1 per month. An Analyst for the Malco State Bank sampled its customers, and generated the following output for a one sample test in Data Analysis. If a=.05, do the customers at Malce State Bank use banking services more than the national average of 4.1 times per month? Sample Hypothesized mean 4.1 5.026 4.736 Mean Variance Observations df t Stat P(TC=t) one-tail t Critical one-tail P(TC=t)...
Stress between males and females
*Note: alpha = .001
1 t-Test: Two-Sample Assuming Unequal Variances Female Male 4 Mean 5 Variance 6 Observations 7 Hypothesized Mean Difference 3.655737705 3.52857143 1.296174863 1.12236025 70 61 8 df 9 t Stat 10 P(T-t) one-tail 11 t Critical one-tail 12 P(T<-t) two-tail 13 t Critical two-tail 124 0.658596658 0.255687918 3.157259054 0.511375836 3.370720124 Student Survey Data (2 Sample t-test) 1. Test Decision & Basis 2. Interpretation of Test Decision:
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