Considering that we have the standard deviation for the sample, the t-distribution will be used, and the critical value is t = 2.6682.
<h3>When should the t-distribution and the z-distribution be used?</h3>
- If we have the standard deviation for the sample, the t-distribution should be used.
- If we have the standard deviation for the population, the z-distribution should be used.
In this problem, σ is not known, hence we get the standard deviation of the sample from the histogram and the t-distribution is used.
Using a t-distribution calculator, considering a <em>confidence level of 99%</em> and 56 - 1 = <em>55 df</em>, the critical value is t = 2.6682.
More can be learned about the t-distribution at brainly.com/question/16162795
Answer:
3/91 ; 36/91
Step-by-step explanation:
1) favourable event/ total possibilities * favourable event/ new total possibilities
3/14 * 2/13 = 3/91
2) it is simplier calculate the probability of the opposite event (no balls are blue)
11/14 * 10/13 = 55/91
91 - 55 = 36
final answer 36/91
It’s the second 1 in the top corner , where the u line is perfect and the slanted line is perfect
Answer:
nnnnnnnn
Step-by-step explanation:
Answer:
-7x
Step-by-step explanation:
This is actually simpler than you might think. Just subtract.
4x-11x
-7x