Jack plots points showing equivalent ratios on the coordinate plane below.

Plzzzz anyone just LOOK AT THISSSSS do u go to alpha omega academy also if u do could u help me with quiz:1 variable expressions

Dmitrij [34]

Answer:

no. i dont go to alpha omega academy

5 0

3 years ago

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A variety of stores offer loyalty programs. Participating shoppers swipe a bar-coded tag at the register when checking out and r

dsp73

Answer:

$t=\frac{130-120}{\frac{40}{\sqrt{80}}}=2.236$

Now we can find the degrees of freedom:

$df=n-1=80-1=79$

Now we can calculate the p value with the alternative hypothesis using the following probability:

$p_v =P(t_{(79)}>2.236)=0.0141$

Using a significance level of 0.01 or 1% we have enough evidence to FAIL to reject the null hypothesis and we can conclude that shoppers participating in the loyalty program NOT spent more on average than typical shopper at this significance level assumed

Step-by-step explanation:

Information given

$\bar X=130$ represent the sample mean

$s=40$ represent the sample standard deviation

$n=80$ sample size

$\mu_o =120$ represent the value to verify

t would represent the statistic

$p_v$ represent the p value

System of hypothesis

We want to verify if shoppers participating in the loyalty program spent more on average than typical shoppers (120) , the system of hypothesis would be:

Null hypothesis: $\mu \leq 120$

Alternative hypothesis: $\mu > 120$

The statistic for this case is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

Replacing the info given we got:

$t=\frac{130-120}{\frac{40}{\sqrt{80}}}=2.236$

Now we can find the degrees of freedom:

$df=n-1=80-1=79$

Now we can calculate the p value with the alternative hypothesis using the following probability:

$p_v =P(t_{(79)}>2.236)=0.0141$

Using a significance level of 0.01 or 1% we have enough evidence to FAIL to reject the null hypothesis and we can conclude that shoppers participating in the loyalty program NOT spent more on average than typical shopper at this significance level assumed

3 0

4 years ago

Pls help I dont get and pls dont troll I need help thank youuuu

miss Akunina [59]

Answer:

(I am assuming that you don't need the answer, but just an explanation of what to do.) Let's take the first problem for an example the first thing you are going to do is subtract 12 on both sides and you will get n> -1 so then you will put a open circle on -1 going to the right.

Hope this helps :)

7 0

4 years ago

Dinner was 29.00 but I left a 25 percent tip, what did I end up paying?

fenix001 [56]

Answer:

Your tip was $7.25 so you payed a total of $36.25 on your $29 bill.

6 0

4 years ago

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What graph represents f(x) = 0.5(4)x

vampirchik [111]

Answer:

See attached picture

Step-by-step explanation:

The equation f(x) = 0.5(4)x is most likely $f(x) = 0.5(4)^x$ . This is an exponential. To graph the function, test the points -1, 0, and 1. Then connect.

$f(x) = 0.5(4)^{-1}=0.5(\frac{1}{4}) = \frac{1}{8}$

$f(x) = 0.5(4)^{0}=0.5(1) = 0.5$

$f(x) = 0.5(4)^{1}=0.5(4) = 2$

5 0

3 years ago