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konstantin123 [22]
3 years ago
14

If two events have probabilities which sum to 1, they are called ________ events.

Mathematics
2 answers:
Alenkasestr [34]3 years ago
8 0
<span>An event with probability 0 never occurs. An event with probability 1 occurs on every trial</span>
Olenka [21]3 years ago
7 0
Variables maybe I'm 95% percent sure
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Solve the equation: -5/4n  = 40
stepladder [879]
- \frac{5}{4}n = 40\ \ / \cdot(-\frac{ 4}{5}) \\ \\- \frac{5}{4}\cdot(- \frac{4}{5})n = 40\cdot (-\frac{4}{5})\\ \\ n = 8\cdot (-4) \\ \\n=-32\\ \\ Answer: \ B: \ \ n = -32


6 0
3 years ago
I am having trouble showing proofs question 1 is the most troubling, solving question 2 would also be most appreciated.
Alona [7]

I dont know ask mods

8 0
3 years ago
the price of a computer after discount was 1,200 if the doscount was 20% how much discount does mandy get ??
zzz [600]
1200= 80%  
?       =100%

to find the ?  you can multiply 100(1200)=120000
then 120000 divided by 80= 1500
 the original price was 1500, with the discount of  20%   you save 300$   and the price is 1200$

7 0
3 years ago
Read 2 more answers
- 12abx' +6a’bx°- 30ab!
Gemiola [76]
B-30a x b would be my answer
8 0
4 years ago
At a canning facility, a technician is testing a machine that is supposed to deliver 250 milliliters of product. The technician
Vinvika [58]

Answer:

1.97

Step-by-step explanation:

The null hypothesis is:

H_{0} = 250

The alternate hypotesis is:

H_{1} \neq 250

Our test statistic is:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the hypothesis tested(null hypothesis), \sigma is the standard deviation and n is the size of the sample.

In this problem, we have that:

X = 251.6, \mu = 250, \sigma = 5.4, n = 44

So

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

t = \frac{251.6 - 250}{\frac{5.4}{\sqrt{44}}}

t = 1.97

8 0
3 years ago
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