18-Apr-2022

## Finding Negative Z Score Value

Okay now the question is to location is for a standard normal distribution. What we want to find probability the bigger than negative. Two point, 64 I'm going to draw the graph, and then show you what area in a graph that we are looking for and how we can approach the problem.

So now I want your graph. And then in this craft this here we have x-axis. This is the y x2 axis. And then we are going to turn a normal stand step, normal distribution. Okay, here I'm going to set this value to be equal to. What we are looking for is a two point, six, four, right? Negative, two point, six four.

And then the area we are looking for is typical and negative. Two point, six four. So what do you think which area in a crop that we are looking for? You will be a'm going to do the one that I'm shaded is the area that we are looking for in a normal distribution function. Okay. So here right the entire area, the entire area that is a bigger than to negative.

Two point, six, four, it's, the probability that we are looking for so. By symmetric, what does this equivalent to this area is equivalent to what this area is equivalent to when we said negative, two point, six four is a symmetric tool of value. Two point, six fluoride. And the enmity is a bigger than negative 2.6 for its equivalent to the area that it's smaller than 2.6 for okay.

So I'm going to turn the equation here. Help you to understand what this entire area so isometrics water. Watch I'm going to make it in learn equations. So that you have a better understanding be.

They write bigger and negative 2.6 for its equivalent to probability X and E is smaller than 2.6 for okay. So after we sell this, and after we have a dist understanding what we can work, we can look for the detail this disk or table, which will show us the value for this model and 2.64. And here I have a table I'm going to find out where I can hear I'm going to get my tape. Let me show let me show screen so that you can see share screen.

Okay, okay. Now my computer does not around share screen. And right now, so I'm gonna look for at the table myself, and I'm going to write the p-value here.

So the date April 2.64. So after checking on the table, I found out that the solution to be equal to 0.99 five-night, right here. This is equal to 0.9.

We go to the data point, nine, nine, five, nine, so I'm going to review our approach. So by looking at this is a normal standard distribution graph. And we are looking foolish the area that it's a bigger than negative 2.6 for my symmetry is equivalent to looking. For the area that is less than two point, six four.

And because we can find the value of a positive J value and from the desk or table, which is equivalent to zero point, nine, nine, five, nine.

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