BIOLOGY HIGH SCHOOL

a researcher wishes to know whether there is a significant difference in the number of knee injuries reported among four sports. how many degrees of freedom are there for this chi-square analysis

Answers

Answer 1
Answer:

Answer:

Chi-square analysis cannot be used to check for significant difference in the number of knee injuries among four sports.

Explanation:

The chi-square analysis is a statistical procedure that is used to test association between measured variables or goodness of fits of a set of measured variables to expected outcomes.

In the case of testing for significant difference, chi-square analysis cannot be used as testing for significant difference in two or more means requires using t-test, analysis of variance, or any other relevant statistical procedure.

To compare number of knee injuries reported among four sports for significant difference, the most suitable statistical procedure would be analysis of variance.

Related Questions

How are structure and function related to adaptation?
Which of the following typical adaptations of marine animals is not found in sea otters?a. streamlined body b. webbed hands and feet c. body covered in thick fur d. breathing apparatus on the top of the head
Gradualism is a pattern of evolution in which. A. a single species evolves into several closely related species. B. several distantly related species develop similarities. C. a species evolves at a slow, steady pace. D. a species has periods of little evolution interrupted by periods of rapid evolution.
The first step in releasing the energy of glucose in the cells is known as
What is the product after 1 cycle of the Calvin cycle

Nitrifying bacteria convert _____ to _____.

Answers

Ammonia to nitrates. 
Hope that helped you.

Why is the understanding of classification an important life skill

Answers

so that you can be organized in your home or for school or work and you can categorize things to arrange them

Answer: so that you can be organized in your home or for school or work and you can categorize things to arrange them

Explanation:

In a active transport materials move from an area of ? Concentration and use ?

Answers

In active transport, materials move from an area of high concentration to an area of lower concentration (goes down the concentration gradient) and it requires or uses energy in the form of ATP (adenosine triphosphate)
In the mode of transport known as active transport, materials, including molecules and other substances move from an area of low concentration to an area of higher concentration, or the flow of particulates is against the concentration gradient of the cell. Due to this alternate movement of substances that is different from passive transport, energy is required for the transport of said particles. The form of energy can come from many different sources whether it be the proton motive force, and ATP. Specifically carrier proteins help assist in the movement of certain particles that cannot easily bypass the plasma membrane of a cell.

Migration is always temporary.
True of false
I'm choosing false.

Answers

The answer is false.

The answer is d. increased biodiversity.

Migration is an adaptation that helps animals to survive. There are many reasons for migration leading to temporary or permanent migration.

For example, if climate changes or food supply reduces, some animals will move to the area with adequate climate or enough food, respectively. These are examples of temporary migration since those animals will not return to their original area of living.
Some animals, on the other hand, move to reproduce, such as the Atlantic Salmon. So, they migrate seasonally, when is the right time for reproduction. After that, they return to their original area of living.

Bacteria can thrive in many environments including hostile environments like hot springs, polar ice caps and salt flats. This is due to the ________ of bacteria.A. biochemical diversity
B. small sizes
C. varied shapes
D. methods of movement

Answers

Answer: The correct answer for the blank is A.biochemical diversity.

Bacteria can thrive in various environmental conditions such as hot springs, salt flat, polar ice caps because of their biochemical diversity.

For instance, the organisms belonging to the domain archaea ( such as methanogens) live in extremely harsh environmental conditions. They have ether linked lipids in their cell membrane ( unlike bacteria, which possess ester linked lipids) and do not have peptidoglycan in their cell membrane. This provides them an advantage to survive under harsh conditions.
i think its A because  the small size , shape and the methods of movement have nothing to do with the environments it can survive in 

The body's ability to maintain a relatively constant internal environment is called homeostasis. This stability can be challenged by:(Select all that apply)
A. reduced water or food intake
B. infectious organisms
C. elevated or depressed blood pH
D. extreme temperatures.

Answers

Homeostasis is the body's ability to maintain a constant internal environment. This stability can be challenged by reduced water and food intake and an elevated or depressed blood pH.

Final answer:

Homeostasis, the body's ability to maintain internal balance, can be challenged by reduced food or water intake, infectious organisms, changes in blood pH, and extreme temperatures. These challenges can disrupt the body's normal functions and cause varying health impacts.

Explanation:

The body's ability to maintain a relatively constant internal environment, called homeostasis, can indeed be challenged by various factors. Reduced water or food intake can alter the balance of nutrients and hydration in the body, potentially leading to dehydration or malnutrition. Similarly, infectious organisms such as bacteria, viruses, or parasites can disrupt homeostasis by causing disease.

Elevated or depressed blood pH, which refers to the acidity or alkalinity of the blood, can disrupt bodily functions if it falls outside of a certain range. Finally, extreme temperatures can challenge body's ability to regulate its own temperature, potentially leading to conditions like hypothermia or heat stroke.

Learn more about Challenges to Homeostasis here:

brainly.com/question/33360833

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