Several methods of estimating the number of seeds in soil samples have been developed by ecologists....
Several methods of estimating the number of seeds in soil samples have been developed by ecologists. A study examined whether there was a significant difference in the number of seeds detected by the direct method and the stratified methods on 27 soil specimens.
Explain why these data should be analyzed as a paired data
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Several methods of estimating the number of seeds in soil
samples have been developed by ecologists....
2. Two simple and inexpensive screening methods have been developed to identify individuals with HIV infection...
2. Two simple and inexpensive screening methods have been developed to identify individuals with HIV infection at routine medical check-ups. To study the sensitivity and specificity, both methods were tested on 12860 persons who underwent a simultaneous and thorough clinical examination that was considered to give an accurate diagnosis. There were 1900 cases of disease as diagnosed by clinical methods. The Screening test #1 was positive for a total of 1000 people, including 800 with active HIV infection. The screening...
5. The active ingredient of a particular kind of drug tablet has traditionally been measured by...
5. The active ingredient of a particular kind of drug tablet has traditionally been measured by method A. A cheaper and quicker method B has been developed but its reliability has to be tested against method A. Each of 10 tablets is divided into two halves and the amount of active ingredient (in milligrams) is measured, one half-tablet by method A and the other by method B. The results are given below. Tablet Method A Method B Difference 97.2 97.2...
The laboratory performed a comparison study of LDL-c values in 40 participants (40 samples are split...
The laboratory performed a comparison study of LDL-c values in 40 participants (40 samples are split so are considered matched or pairs) using two different analyzers, the Abbott and the Roche. The Abbott is considered the gold standard method used in many facilities and the Roche is new and of interest due to faster turn-around time and economical factors. The purpose of the comparison study is to determine if there is a significant difference in results by the two methods...
BACKGROUND & METHODS The relationship between stress and breast cancer has been examined in many epidemiological...
BACKGROUND & METHODS
The relationship between stress and breast cancer has been
examined in many epidemiological studies, the results of which have
yielded mixed results. One reason for these differences is the use
of different measures of stress. For example, death of a spouse or
close relative is a major acute stressor, whereas stress
experienced in daily life is more moderate and chronic in nature.
As these different types of stress likely have different
physiological and psychological impacts, the observed...
Can Dogs Understand Human Cues? EXPLORATION Dogs have been domesticated for about 14,000 years. In that...
Can Dogs Understand Human Cues? EXPLORATION Dogs have been domesticated for about 14,000 years. In that time, have they been able to develop an understanding of human gestures such as pointing or glancing? How about simi lar nonhuman cues? Researchers Udell, Giglio, and Wynne tested a small number of dogs in order to answer these questions. In this exploration, we wll first see whether dogs can understand human gestures as well as nonhuman gestures. To test this, the researchers positioned...
A real estate research firm has developed a regression model relating list price (Y in 1,000)...
A real estate research firm has developed a regression model relating list price (Y in 1,000) with two independent variables. The two independent variables are number of bedrooms and size of the property. Part of the regression results are shown below. ANOVA MS Regression 256881.37 128440.68 Residual 42 726699.96 17302.38 Coefficients Standard Error Star Intercept 54.298 # Bedrooms 53.634 71.326 5.271 33.630 Acres 21.458 1. What has been the sample size? (2 Points) 2. What is the value of the...
2) Populations versus samples. For each statement, answer with either population, sample, or both. A) The compl...
2) Populations versus samples. For each statement, answer with either population, sample, or both. A) The complete set of information. B) A portion, not all, of the information. C) Has the potential to be biased or misleading. D) Measured or summarized with parameters. E) Measured or summarized with statistics. 3) Descriptive versus inferential statistics. For each statement, answer with either descriptive or inferential statistics. A) Facts about samples. B) Educated guesses about populations based on samples. C) The world population...
Hello, I did this essay but I need to change the graphs, like if I did...
Hello, I did this essay but I need to change the graphs, like if I
did them my self, just read the essay and do 2 or three graphs that
can explain what I’m talking about, please do it on word or excel,
not in a paper
please and thank you
Candida Glabrata MATERIALS AND METHODS The study will assume a qualitative study design, in which the data collected will not have directly quantifiable variables but will be based on...
Hello, I did this essay but I need to change the graphs, just read the essay...
Hello, I did this essay but I need to change the graphs, just
read the essay and do 2 or three graphs that can explain what I’m
talking about, please do it on word or excel, not in a paper
please and thank you
Candida Glabrata MATERIALS AND METHODS The study will assume a qualitative study design, in which the data collected will not have directly quantifiable variables but will be based on an evaluation based on a review of...
Can you please explain in simple terms the methods of this experiment? I'm having difficulty visualizing...
Can you please explain in simple terms the methods of this experiment? I'm having difficulty visualizing and understanding what is being done. I have copied and pasted some of the text from the article. Thank you! Abstract : Obesity, high-fat diets, and subsequent type 2 diabetes (T2DM) are associated with cognitive impairment. Moreover, T2DM increases the risk of Alzheimer's disease (AD) and leads to abnormal elevation of brain beta-amyloid levels, one of the hallmarks of AD. The psychoactive alkaloid caffeine...
5. The active ingredient of a particular kind of drug tablet has traditionally been measured by method A. A cheaper and quicker method B has been developed but its reliability has to be tested against method A. Each of 10 tablets is divided into two halves and the amount of active ingredient (in milligrams) is measured, one half-tablet by method A and the other by method B. The results are given below. Tablet Method A Method B Difference 97.2 97.2...
The laboratory performed a comparison study of LDL-c values in 40 participants (40 samples are split so are considered matched or pairs) using two different analyzers, the Abbott and the Roche. The Abbott is considered the gold standard method used in many facilities and the Roche is new and of interest due to faster turn-around time and economical factors. The purpose of the comparison study is to determine if there is a significant difference in results by the two methods...
BACKGROUND & METHODS
The relationship between stress and breast cancer has been
examined in many epidemiological studies, the results of which have
yielded mixed results. One reason for these differences is the use
of different measures of stress. For example, death of a spouse or
close relative is a major acute stressor, whereas stress
experienced in daily life is more moderate and chronic in nature.
As these different types of stress likely have different
physiological and psychological impacts, the observed...
Can Dogs Understand Human Cues? EXPLORATION Dogs have been domesticated for about 14,000 years. In that time, have they been able to develop an understanding of human gestures such as pointing or glancing? How about simi lar nonhuman cues? Researchers Udell, Giglio, and Wynne tested a small number of dogs in order to answer these questions. In this exploration, we wll first see whether dogs can understand human gestures as well as nonhuman gestures. To test this, the researchers positioned...
A real estate research firm has developed a regression model relating list price (Y in 1,000) with two independent variables. The two independent variables are number of bedrooms and size of the property. Part of the regression results are shown below. ANOVA MS Regression 256881.37 128440.68 Residual 42 726699.96 17302.38 Coefficients Standard Error Star Intercept 54.298 # Bedrooms 53.634 71.326 5.271 33.630 Acres 21.458 1. What has been the sample size? (2 Points) 2. What is the value of the...
2) Populations versus samples. For each statement, answer with either population, sample, or both. A) The complete set of information. B) A portion, not all, of the information. C) Has the potential to be biased or misleading. D) Measured or summarized with parameters. E) Measured or summarized with statistics. 3) Descriptive versus inferential statistics. For each statement, answer with either descriptive or inferential statistics. A) Facts about samples. B) Educated guesses about populations based on samples. C) The world population...
Hello, I did this essay but I need to change the graphs, like if I
did them my self, just read the essay and do 2 or three graphs that
can explain what I’m talking about, please do it on word or excel,
not in a paper
please and thank you
Candida Glabrata MATERIALS AND METHODS The study will assume a qualitative study design, in which the data collected will not have directly quantifiable variables but will be based on...
Hello, I did this essay but I need to change the graphs, just
read the essay and do 2 or three graphs that can explain what I’m
talking about, please do it on word or excel, not in a paper
please and thank you
Candida Glabrata MATERIALS AND METHODS The study will assume a qualitative study design, in which the data collected will not have directly quantifiable variables but will be based on an evaluation based on a review of...
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