B 12:3 = 4-1=3 C 10- 7=3 And A 2+15x=x=15-2=13
Answer
B - 1/4
explanation
246 rounds up to 250. 1000/250=4, meaning 1/4 of the people surveyed liked green.
because 1/4 of the people surveyed so far liked green, it’s most likely that the next person will like green.
Answer:
A two-sample t-test for a difference between sample means
Step-by-step explanation:
<u>Explanation</u>:-
A random sample of 50 bags from each of Brand X and Brand Y was selected
Given two sample sizes n₁ and n₂
Each bag was held from its rim, and one-ounce weights were dropped into the bag one at a time from the same height until the bag ripped
mean of ounces the first sample = x⁻
mean of the second sample =y⁻
Given data one-ounce weights were dropped into the bag one at a time from the same height until the bag ripped
Standard deviation of the first sample = S₁
Standard deviation of the second sample = S₂
Now we use t - distribution for a difference between the means

where

Degrees of freedom γ = n₁ +n₂ -2