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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 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...
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)...
Hi, See the data set below. Based on this, Excel comes with the following analysis (paired difference). I need to calculate a 95% confidence interval. Based on this, I came to the following formula: [Mean of the difference (D-mean) +/ t(alpha/2) * Sd / sqrt(n)]. I can fill in the following information: D-mean = 27-34 = -7. t(alpha/2) = 2,262 sqrt(n) = sqrt(10) Do you now how I can find the standard deviation of the sample? (Sd) I think it...
A researcher wanted to see if students will learn more effectively with a constant background sound, as opposed to an unpredictable sound or no sound at all. She randomly divides twenty-four students into three groups of eight. All students study a passage of text for 30 minutes. Those in group 1 study with background sound at a constant volume in the background. Those in group 2 study with noise that changes volume periodically. Those in group 3 study with no...
13: A national survey found that the average number of banking services used was 4.1 per month. An Analyst for the Maleo State Bank sampled its customers, and generated the following output for a one sample test in Data Analysis. Ifa - 05, do the customers at Malco State Bank use banking services more than the national average of 4.1 times per month? Hypothesized mean 4.1 Mean Variance Observations df Stat P(T<t) one-tail t Critical one-tail PIT<t) two-tail t Critical...
QUESTION 3)What is the critical value of the test statistic to test the mean child mortality rate for countries in Africa is more than the mean child mortality rate for countries in South Asia? 0.59 0.299 0.126 2.015 2.35 Case Description Corporations with international operations need to assess the risks associated with setting up and maintaining operations in different regions of the world. Consideration of the risks include considering such issues as political and economic stability. One indicator of the...