A college administrator states that the average high school GPA for incoming freshman is normally distributed with a mean equal
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Given that:
---- i.e. the proportions that do not know their blood group
There are several sampling methods, however the best sampling method to use in this case is a simple random sampling.
This is because it gives each student in the campus an equal chance of being selected to participate.
The sample would be collected from the population of students in the school campus.
From the question, given proportion is about the students in the campus. So, the sample to be selected must represent the case study, which are the students
The chosen sample would be used by conducting a test of hypothesis
To carry out this test, we need to set the null and alternate hypotheses.
Then calculate the critical value.
Then the test statistic.
How the test statistic compares to the critical value will determine if the null hypothesis will be accepted or rejected
Further reading:
Answer:
(a)1 out of 4.
(b)27%
(c)0.73 or 73%
Step-by-step explanation:
Tommy’s probability of winning is given as 0.27.
(a)Ratio Form
Therefore, the probability that Tommy will win is <u>1 out of 4.</u>
(b)Exact Percent Value
Multiply the probability by 100 to obtain the exact percent value.
0.27 X 100=27%
(c)Probability that Tommy will not win.
Probability that Tommy will win+Probability that Tommy will not win=1
0.27+Probability that Tommy will not win=1
Probability that Tommy will not win=1-0.27
Probability that Tommy will not win=0.73
The required steps are explained below to convert the quadratic function into a perfect square.
<h3>What is the parabola?</h3>It's the locus of a moving point that keeps the same distance between a stationary point and a specified line. The focus is a non-movable point, while the directrix is a non-movable line.
Let the quadratic function be y = ax² + bx + c.
The first step is to take common the coefficient of x². We have
Add and subtract the half of the square the coefficient of x,
Then we have
These are the required step to get the perfect square of the quadratic function.
More about the parabola link is given below.
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