The null hypothesis makes a claim about population parameter. A null hypothesis is a statement about the value of a population parameter. So the correct answer is (a).
An example of a null hypothesis is one that asserts that no statistical significance can be found in a collection of provided observations. A hypothesis is tested using sample data to determine how plausible it is. It is represented as H0 and is occasionally referred to as simply the "null." To determine if a theory regarding markets, investment methods, or economies is correct or wrong, quantitative analysts employ the null hypothesis, often known as the conjecture. The alternate theory contends that there is a distinction.
Therefore correct answer is (a).
Learn more about Null hypothesis here:
brainly.com/question/10696530
#SPJ4
The Era of Good Feelings<span> marked a period on da political history of thee United States that reflected a sense of national purpose and a desire for unity among Americans in the aftermath of the </span>War of 1812
Both of the Mayans and the Aztecs developed advanced calendars and had a keen understanding of astronomy.
The correct answer is :
An upper body performance test known as the sitting medicine ball throw (SMBT) is used to assess muscular health in older people. The aim of this study was to assess the test-retest reliability and validity of the SMBT in older women. In this study, 35 ladies (mean age: 75.15 + 6.39 years) took part. Over the course of three sessions, subjects completed SMBT trials utilising standard ball masses (SMBT4 lb and SMBT3 kg). On the first day, instruction in the SMBT and chest press 1 repetition maximum (CP1RM) was given. The tests were repeated on day 2, but data were recorded. On day 3, SMBT was retested, and then chest press peak power (CPPP) values between 30 and 80 percent of CP1RM were assessed.
The CPPP and SMBT4lb (r = 0.775, p 0.001) and SMBT3kg (r = 0.734, p 0.001) exhibited significant relationships (p 0.05), and the SMBT distance showed expected ageing reductions (r = -0.724 to -0.626, p 0.001), proving its validity. There was found to be high reliability between testing days, and Bland-Altman plots revealed few locations that deviated significantly from the bounds of agreement. The SMBT is a valid and incredibly trustworthy instrument that health providers can use to track upper body muscular power deficits in older women and enhance treatment regimens.
To learn more about validity and reliability refer the link:
brainly.com/question/14124062
#SPJ4
Answer:
The primary function of a sectional view is to reveal:_______.
c) Interior features
Explanation:
Imagine you draw a machine. What people can see in your drawing is the outside of the machine, how it looks externally. If you wish to show people what the machine looks like on the inside, you will need to draw a sectional view of it. It's as if you are drawing the machine with part of it cut open, as if a section of it has been removed.
Another example I could give you is when Medicine and Biology students study anatomy. Since they need to see what bodies look like on the inside, they often work with sectional view drawings of body parts.
