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Anna71 [15]
3 years ago
7

Pls help with this question. I will give brainliest answer :)

Mathematics
2 answers:
____ [38]3 years ago
8 0

Answer:

lance

Step-by-step explanation:

because they get 7 point each and he has more

tino4ka555 [31]3 years ago
5 0
Lance is the answer
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Evaluate the function f(x)=2x-2 when x equals negative 1<br> A. -4<br> B. -3<br> C. 0<br> D. 4
Alona [7]
F(x)= -4. 
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y=2x-2 so you would just solve for y by plugging in -1 into x.
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8090 [49]

Answer:

The confidence interval for the mean is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

And the confidence interval is given by:

(0.123, 0.177)

And for this case the interval contains the value 0.16, so then we can conclude at 5% of significance that the true proportion is not different from 0.16

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. And the critical value would be given by:

z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The confidence interval for the mean is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

And the confidence interval is given by:

(0.123, 0.177)

And for this case the interval contains the value 0.16, so then we can conclude at 5% of significance that the true proportion is not different from 0.16

3 0
3 years ago
Just need help with 4. Please
konstantin123 [22]

Answer:

11 3/5*9*12 1/2=1,305

1,305 cubic meters

Hope I helped.

Step-by-step explanation:

6 0
3 years ago
If a person measures 42in in height what does the person measure in feet. I got the answer correct which is 3ft 6in but I need t
faust18 [17]
42in=42\cdot0.0833333ft=3.5ft\\\\Answetr\ is\ 3.5\ feet.
6 0
3 years ago
Read 2 more answers
How do I solve number 1
cestrela7 [59]
Because he ended up paying $24 more than the actual price of the drill, this is the amount of interest he paid.

In total, the repairman pays $324 in 6 equal payments. So, each payment was \dfrac{\$324}6=\$54.
3 0
2 years ago
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