Due to pemdas you would have to start with multiplication. 3×12= 36. Then you do addition which would be 9+36= 45.
Answer:
The answer is d
Step-by-step explanation:
A line segment is a portion of an infinite line separated by two end points
Answer:
5 is 125% of 4
because 100/4=25% per one
5-4=1
so that means 100% +1 part(25%)= 125%
Step-by-step explanation:
Answer:
Yes, there is evidence to support that claim that instructor 1 is more effective than instructor 2
Step-by-step explanation:
We can conduct a hypothesis test for the difference of 2 proportions. If there is no difference in instructor quality, then the difference in proportions will be zero. That makes the null hypothesis
H0: p1 - p2 = 0
The question is asking whether instructor 1 is more effective, so if he is, his proportion will be larger than instructor 2, so the difference would result in a positive number. This makes the alternate hypothesis
Ha: p1 - p2 > 0
This is a right tailed test (the > or < sign always point to the critical region like an arrowhead)
We will use a significance level of 95% to conduct our test. This makes the critical values for our test statistic: z > 1.645.
If our test statistic falls in this region, we will reject the null hypothesis.
<u>See the attached photo for the hypothesis test and conclusion</u>
8 girls 12 boys = 20 total
12/20= 3/5 = .6 *100 =
60% is the first answer
34 trees (3 types) +? Scotch pines
= 50 total
50-34= 16/50*2 = 32/100=
32% scotch pines is the second answer
20 grapes 1 pear
13/20*5 = 65/100 =
65% grapes third answer
Found 20 | did not find 5 | 25 total
5/25*4= 20/100=
20% is the fourth answer