Answer:

Step-by-step explanation:
CHECK THE COMPLETE QUESTION BELOW;
A laundry basket has 24 t-shirts in it. Four are Navy, 12 are red, and the rest is white. What is the probability of randomly selecting a red t-shirt
EXPLANATION
Total number of the t-shirt in the laundry basket = 24
Number of Navy t-shirt = 4
Number of red t- shirt = 12
The number of white t- shirt in the laundry basket can be calculated as follow;
Total number of t- shirt - (Number of Navy t-shirt + Number of red t- shirt)
Number of white t- shirt = 24 -(4+12)
Number of white t- shirt = 8
The probability of randomly selecting a red t-shirt = 


Answer:
the correct answer is 1/5
Step-by-step explanation:
Answer:
Step-by-step explanation:
a) This is a right tailed test. The significance level is α. The critical value corresponding to 1 - α is 3.733. From the t distribution table with a df of 15, 1 - α = 0.999
α = 1 - 0.999 = 0.001
b) This is a left tailed test. Degree of freedom, df = n - 1 = 24 - 1 = 23
The critical value corresponding to 1 - α is - 2.500. From the t distribution table with a df of 23, 1 - α = 0.99
α = 1 - 0.99 = 0.01
c) This is a two tailed test. Degree of freedom, df = n - 1 = 31 - 1 = 30
The critical value corresponding to 1 - α/2 is 1.697. From the t distribution table with a df of 30, 1 - α/2 = 0.95
α/2 = 1 - 0.95 = 0.05
α = 2 × 0.05
α = 0.1