Considering the situation described, the appropriate null hypothesis is given by:
<h3>What are the hypothesis tested?</h3>
At the null hypothesis, it is tested if the proportion is the expected one, that is, of 9%, hence:
At the alternative hypothesis, it is tested if there is enough evidence to conclude that the proportion is above 9%, hence:
.
More can be learned about an hypothesis test at brainly.com/question/26454209
#SPJ1
For #6
x + y = -10
x - y = 2
First solve for y in one of the equations
x - y = 2
-y = 2 - x
y = -2 + x
y = x - 2
Now substitute into one of the equations and solve for x
x + y = -10
x + x - 2 = -10
2x - 2 = -10
2x = -8
x = -4
<span>Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation?</span>
Step-by-step explanation:
Given: r = 4 cm
The surface area A of a sphere is given by
Answer:
25 / 676
Step-by-step explanation:
There are 5 vowels in the alphabets, and there are 26 alphabets in total as a whole.
The probability of drawing a vowel kb first trial is going to be
5 / 26, total number of vowels and total number of alphabets as a whole.
Again, we're told to replace the picked vowel, and pick another vowel, so that will once again be
5 / 26.
To get the final answer, we multiply both answers by each other
5 / 26 * 5 / 26 = 25 / 676.
Therefore, the probability has been found to be 25 / 676
