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Katena32 [7]
2 years ago
12

Which relationships describe angles 1 and 2?

Mathematics
1 answer:
Aneli [31]2 years ago
3 0
They are complementary and adjacent angles (Brainliest please)
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1. How many four-digit numbers have a digit sum of 3?
nika2105 [10]

Answer:

10 numbers

Step-by-step explanation:

3 0
3 years ago
The American Bankers Association reported that, in a sample of 120 consumer purchases in France, 48 were made with cash, compare
tatuchka [14]

Answer:

Step-by-step explanation:

Hello!

You have the information for two variables

X₁: Number of consumer purchases in France that were made with cash, in a sample of 120.

n₁= 120 consumer purchases

x₁= 48 cash purchases

p'₁= 48/120= 0.4

X₂: Number of consumer purchases in the US that were made with cash, in a sample of 55.

n₂= 55 consumer purchases

x₂= 24 cash purchases

p'₂= 24/55= 0.4364

You need to construct a 90% CI for the difference of proportions p₁-p₂

Using the central limit theorem you can approximate the distribution of both sample proportions p'₁ and p'₂ to normal, so the statistic to use to estimate the difference of proportions is an approximate standard normal:

[(p'₁-p'₂) ± Z_{1-\alpha /2} * \sqrt{\frac{p'_1(1-p'_1)}{n_1} +\frac{p'_2(1-p'_2)}{n_2} }]

Z_{0.95}= 1.648

[(0.4-0.4364)±1.648 * \sqrt{\frac{0.4(1-0.4)}{120} +\frac{0.4364(1-0.4364)}{55} }]

[-0.1689;0.0961]

The interval has a negative bond, it is ok, keep in mind that even tough proportions take values between 0 and 1, in this case, the confidence interval estimates the difference between the two proportions. It is valid for one of the bonds or the two bonds of the CI for the difference between population proportions to be negative.

I hope this helps!

8 0
3 years ago
Need help on this guys, help pls.
marusya05 [52]

Answer:

1,740 261

20+3

Final answer 23

Step-by-step explanation:

Sorry If I am wrong.

4 0
3 years ago
X+3 < -2 solve inequality
Delicious77 [7]
Take away 3 from both sides,

x+3<-2
   -3  -3 
=x<-5

answer=x<-5
hope this helps.......
8 0
3 years ago
If you could help I would really appreciate it, but if not that’s fine. Thank you.
Alexus [3.1K]
Since 2 is less than or equal to 2, you input it into the first equation!

3•(2) -5
6-5
1

The answer is 1!
8 0
3 years ago
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