Let 
be the random variable for the number of marks a given student receives on the exam.
10% of students obtain more than 75 marks, so
where 
follows a standard normal distribution. The critical value for an upper-tail probability of 10% is
where 
denotes the CDF of , and 
denotes the inverse CDF. We have
Similarly, because 20% of students obtain less than 40 marks, we have
so that
Then 
are such that
and we find
-3 + -3 = 0
-5 + 1 = -4
vector = < 0,-4 >
Answer:
4,400,073
Step-by-step explanation:
Ez
44.5 because u measure the length with width
<span>For example, you are trying to study the effects of depression in women and men.
Suppose you used a scale for depression in a form of test. There are a lot of raw scores given since your participants are over a hundred. You can use a frequency table to cluster and categorize the parameters which are the raw scores in a more tabled setting for example
Raw scores f
1-5 1
6-10 5
11-15 9
16-20 55
Statistics. </span><span>Statistics is a branch of mathematics which is the scientific study of mathematical values pertaining to qualitative descriptions and transcribe them into quantifying values such as the descriptive statistics and infuses these quantities in the field of inferential statistics. In these two categories involve probabilities, distribution and deviations which are mainly compositions of the descriptive statistics. Inferential statistics will involve comparison and variation of the given values. Methods are t-test, analysis of variance, and two-way analysis of variance and other methods.<span>
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