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oksano4ka [1.4K]
3 years ago
15

13- (8x - 5) – 16x

Mathematics
1 answer:
KatRina [158]3 years ago
3 0

Answer:

The answer is 6(3-4x) because I just did on a test

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An automobile manufacturer has given its car a 46.7 miles/gallon (MPG) rating. An independent testing firm has been contracted t
erastova [34]

Answer:

z=\frac{46.5-46.7}{\frac{1.1}{\sqrt{150}}}=-2.23    

The p value would be given by:

p_v =2*P(z  

For this case since th p value is lower than the significance level of0.05 we have enough evidence to reject the null hypothesis and we can conclude that the true mean for this case is significantly different from 46.7 MPG

Step-by-step explanation:

Information given

\bar X=46.5 represent the mean

\sigma=1.1 represent the population standard deviation

n=150 sample size  

\mu_o =46.7 represent the value to verify

\alpha=0.05 represent the significance level for the hypothesis test.  

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true mean for this case is 46.7, the system of hypothesis would be:  

Null hypothesis:\mu = 46.7  

Alternative hypothesis:\mu \neq 46.7  

Since we know the population deviation the statistic is given by:

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

Replacing we got:

z=\frac{46.5-46.7}{\frac{1.1}{\sqrt{150}}}=-2.23    

The p value would be given by:

p_v =2*P(z  

For this case since th p value is lower than the significance level of0.05 we have enough evidence to reject the null hypothesis and we can conclude that the true mean for this case is significantly different from 46.7 MPG

7 0
3 years ago
Express 0.000089 in scientific notation
MrRissso [65]
8.9 x 10^-5 in scientific notation
5 0
3 years ago
Hey Adam hey asahi how y’all doing
dexar [7]

hllo dear

Have a wonderful day ahead

6 0
2 years ago
Read 2 more answers
Show working these two questions​
Tresset [83]

Answer:

4(1- 2x)

h = 9 cm

Step-by-step explanation:

4 - 8x

= 4(1- 2x)

A(\triangle ABC) = \frac{1}{2} \times AB\times h

27= \frac{1}{2} \times 6\times h

27= 3\times h

h =\frac{27}{3}

h =9 \: cm

8 0
2 years ago
Evaluate p/2 - 5 when p equals 14
geniusboy [140]

Answer:

2

Step-by-step explanation:

This equation will use substitution, in this equation we'll substitute the given value, 14 for p.

<u />

<u>Substitute 14 in for p:</u>

14/2 - 5

<u>Let's solve:</u>

14/2 - 5

=7 - 5

=2.

3 0
2 years ago
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