#hypothesis testing

49 messages · Page 1 of 1 (latest)

keen oak
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i need a little assist if im doing it right
then ill be able to figure the rest out
i need it really bad

summer moonBOT
delicate hull
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elaborate ? @keen oak

keen oak
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Airline punctuality is a crucial element of passenger satisfaction. Using a random sample of 10 passengers whether the average departure delay time can be considered equal to 20 minutes or if it significantly differs from this benchmark. Find potential Type I and Type II errors, and the one-sample t-test is referenced as a standard method for such inference when the population standard deviation is unknown. Test at 95% confidence level and whether there is a statistically significant relationship between departure delays and overall satisfaction.

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So this is the question i made for my assignment
I wanna use hypothesis testing and sampling with CLT and Type 1,2 errors with it
And also the T-test
As you see in the question

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Here is the sample

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my issues is that im taking the alternative H not equal 20 right
so when im initialising the normal by CLT

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but the deviation and population is not known

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Using chatgpt
I got the standard deviation amd population mean through some calculations
So im not sure what to do now
How to go through this to the end

keen oak
delicate hull
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so you have h0 as satisfied departure delay is 20 min and h1 as not 20 mins

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right

keen oak
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hold it down lads

delicate hull
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so you have the samples right

keen oak
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The 20 i took it as random

keen oak
delicate hull
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ya so, calculate the sample mean, sample SD. then find t from the t test formula.

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you get the critical values of t for 95% CI

keen oak
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Yes yes oh okay

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The sample mean would be the population mean

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New mean

delicate hull
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no

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the sample mean you have to calc from your sample data

keen oak
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Oh lord im confused

delicate hull
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hold on

keen oak
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Aite😭

delicate hull
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so, tell me from the ques, what is your goal

keen oak
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So i have a dataset right
Im using it to apply statistics maths topic

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From the question

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I wanna use sampling and CLT by normal distribution
With the errors of hypothesis testing

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Since i have a random sample
I thought i can put T-test with it

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Im merging them all together as a research question
Then with my data from spreadsheet
I can use the statistics to answer and analyze the question

delicate hull
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so you wanna do a t test to chcek if the delay time is 20 min or not

keen oak
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Yess

delicate hull
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so first make a hypothesis formulateion

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*formulation

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h0 and h1

keen oak
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Yeah i know

keen oak
delicate hull
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now , using one sample t test

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calculate t value

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from the sample mean, pop mean and sample SD

keen oak
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Ahhh

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I got you