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3 years ago

I don’t understand what #5 is asking me to do! Ty

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

4 0

You have to explain how you knew to use 55 and 120, not another option.

Hope it helped! :)

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Which statement BEST models the equation

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Answer:

b A train backed up 7 feet and then moved

forward 7 feet.

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3 years ago

Which of the following numbers is greater than 190,090?

zaharov [31]

A 190,900
(after the comma there is a 9 which makes it one hundred ninety thousand nine hundred 900 is greater than 90)

4 0

3 years ago

How many pizzas are needed for 5 children and for each one to eat ⅕.

Ksju [112]

Answer:

Step-by-step explanation:

If each child eats 1/5 slices, and there are 5 children then you have to multiply 5 by 1/5.

5* 1/5= 1

Hope this helps!

5 0

3 years ago

-(2.6m +5)<br> Please help me

Zinaida [17]

Answer:

Step-by-step explanation:

-(2.6m + 5) = -1(2.6m + 5) = -1•2.6m +(-1)•5 = -2.6m - 5

7 0

3 years ago

A hypothesis will be used to test that a population mean equals 10 against the alternative that the population mean is more than

PilotLPTM [1.2K]

Answer:

A) 2.58

B) 1.96

C) 1.65

Step-by-step explanation:

A hypothesis used to test that

$H_o : \mu = 10$

against the alternatives $H1 : \mu$ not equal to 10

if null hypothesis is true, then distribution of test statics follow

$Zo = \frac{\bar x - \mu}{\frac{\sigma}{\sqrt{n}}}$

for two sided alternatives hypothesis $( H1: \mu \neq 7)$ , then P value is

$P = 2[1- \phi(\left | Zc \right |)]$ (1)

a)significance level $\alpha = 0.01$

from 1 eq we get

$\pi (\left | Zc \right |) = P(Zo$

Therefore $\left | Zc \right | = 2.58$ FROM Z TABLE

B) significance level $\alpha = 0.05$

from 1st equation we get

$\pi (\left | Zc \right |) = P(Zo < \left | Zc \right |) = 1 - \frac{0.05}{2} = 0.975$

Therefore $\left | Zc \right | = 1.96$ FROM Z TABLE

C) significance level $\alpha = 0.10$

from 1 eq we get

$\pi (\left | Zc \right |) = P(Zo$

Therefore $\left | Zc \right | = 1.65$ FROM Z TABLE

3 0

4 years ago