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il63 [147K]
3 years ago
11

If b=a, where one the number line will b appear

Mathematics
1 answer:
Mashcka [7]3 years ago
7 0
Right on top of 'a'. They'll look like one single point on the number line.
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A quality control engineer is testing the battery life of a new smartphone. The company is advertising that the
DIA [1.3K]

The question requires stating the Null and Alternative hypothesis for the scenario described :

Answer:

H0 : μ = 24

H1 : μ < 24

Step-by-step explanation:

The claim or hypothesis to be tested in a statistical problem or analysis is the alternative hypothesis. This is usually the opposite of the Null hypothesis which is the usually the initial truth until there is significant evidence provided using statistical test to prove otherwise.

The null hypothesis, H0 in the scenario above is :

H0 : μ = 24 ( average battery life is 24 hours)

The alternative hypothesis is the claim, that is. The mean battery life not up to 24 hours ;

H1 : μ < 24

4 0
2 years ago
What is the mean for the following set of data?<br> 2,5, 7, 8, 11, 11, 12<br> 10<br> 11<br> 8
Yuri [45]
Add up all the numbers & divide by the number of numbers. That should give you the mean.
4 0
2 years ago
Read 2 more answers
For a few months, the function f(x) = 15(3)^x represented the number of bees in a new hive x months from the time it was started
Brut [27]
I had the same problem. It's C.
6 0
2 years ago
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Estimate the amount of tip to include if you want to leave a 20% tip on a Lyft ride of<br> $8.
tankabanditka [31]

Answer:

1.6$

Step-by-step explanation:

first you multiply 8 with 20 and then divide it with 100

you will get the answer of 1.6$

6 0
2 years ago
At a festival 2/7 of the number of girls was equal to 3/5 of the number of boys. There were 165 fewer boys than girls, how many
koban [17]
X=number of girls.
y=number of boys.
We can suggest this system of equations:
2/7 x=3/5 y ⇒10x=21y   ⇒x=21/10 y
y=x-165 

We can solve this problem by substitution method:
x=(21/10)(x-165)
10x=21x-3465
10x-21x=-3465
-11x=-3465
x=-3465 /-11=315

y=x-165=315-165=150

Number of children=number of girls + number of boys
Number of children=315 +150=465

Answer: there were 465 children  at the festival. 
5 0
3 years ago
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