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Brittney N.

Elementary Statistics a Step by Step Approach

9 months ago

Hi I'm David and I'm here to help you answering your question. Now let me bring up your question here in the question which we discussed about the the student distribution. Now in the question a we have to find the probability under the degrees of freedom equal to the trial, Smalling Echoes in the 1.85 and here we can use the calculator to do it for you. So let me have the degrees of freedom equal to the trail here And we have the discard including the 1.95. So we have 1195 and It should obtain the value equal to 0.9555. For the question a that's very straightforward. Now for the question be we will have to find the key that will be between the two value minus C and C. We don't know yet. So that equity is about 99. The current freedom for the T equal to the 28. Now to do the question be let me try to illustrate on the graph for you. We have the graph and that this didn't like a bell curve here. Now we will have to find a value modesty and see something going here. The middle of the 0C -C. We don't know system the middle area it would equal to the 099. So it means that The one on the left here it will echo to the one Minister bone 1990 Evaluate You. So we got echoed june the 01005. And then we have to look at the table to see what is the value C. So let me do here for you With the 28° of freedom. And then would the probability ico to dessert on zero 05 and dan I want to make sure that one man is up on 99 divided by two equals 0.05. And if we look at the table and the calculator this one is equal to -2. Born 7 63. There's an answer you could get. 2.763. So they found the value we're looking for from this C. Here Here we go. To the -2.763 on the left on the rugby 2.763. Therefore the answer for I will be the reserve on nine 555 for the big will be the 2.763. And that's gonna be the answer.

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