What is the value of the t score for a 99% confidence interval if we take a sample of size 22?

We have that for the Question "What is the value of the t score for a 99% confidence interval if we take a sample of size 22" it can be said that

Hence,the  t-score for a 99% confidence interval is

From the question we are told

What is the value of the t score for a 99% confidence interval if we take a sample of size 22?

Generally the equation for the confidence level  is mathematically given as

Where

Therefore

Using t table

Hence,the  t-score for a 99% confidence interval is

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2.831

Step-by-step explanation:

As per given , we have

sample size : n= 22

Degree of freedom = n-1 = 22-1=21

Significance level for 99% confidence interval =

Using student's t-value table, we have

Hence, the  t score for a 99% confidence interval if we take a sample of size 22= 2.831

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.