Answer:
destroy the teacher muhahahahahahahahaha
Step-by-step explanation:
Answer:
There is a 13.40% probability that a message is spam, given that it contains the word "text" (or "txt").
Step-by-step explanation:
The problem states that
There are 5574 messages.
There are 747 messages that are spam.
Every message contains the word text.
Bayes rule:
What is the probability of B, given that A?
In this problem, we have that
A is containing the word text. So
So
is containing the word text and being a spam message. So:
There is a 13.40% probability that a message is spam, given that it contains the word "text" (or "txt").
-.5 + 2, you can think of this as 2 - .5 as well, it would equal out to be 1.5.
Answer:
m = 33°
Step-by-step explanation:
x = 33°
from picture ;
x = m = 33°
n = y = 124
Answer:
Correct option is (A).
Step-by-step explanation:
Let <em>p</em> = proportion of water samples that exceeded the desired pH level.
A sample of size <em>n</em> = 648 is selected. Of these samples <em>X</em> = 62 exceeded the desired pH levels.
The confidence interval for the population proportion is given by:
The MOE or margin of error is estimated difference between the true population parameter value and the sample statistic value.
The information provided is:
MOE = 0.02
Compute the 90% confidence interval for the proportion of water samples that exceeds the desired pH level as follows:
Thus, the 90% confidence interval for the proportion of water samples that exceeds the desired pH level is (8%, 12%).
This confidence interval implies that there is a 90% confidence that the river water exceeds the desired pH level between 8% and 12% of the time studied.
The correct option is (A).