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Klio2033 [76]
2 years ago
13

If Carissa leaves 20% tip and her bill is $32.18 what tip did she leave?

Mathematics
2 answers:
Yuri [45]2 years ago
8 0
The tip Carissa leaves is $6.44
Alexandra [31]2 years ago
8 0
She leaves a tip of $6.44
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7. License Plate Laws The Chapter Problem involved passenger cars in Connecticut and passenger cars in New York, but here we con
sergejj [24]

Yes it is true that commercial truck owners violate laws requiring front license plates at a higher rate than owners of passenger cars because null hypothesis is rejected.

Given among 2049 Connecticut passenger cars, 239 had only rear license plates. Among 334 Connecticut trucks, 45 had only rear license plates.

let p_{1} be the probability that commercial cars have rear license plates and p_{2} be the probability that connected trucks have rear license plates.

                         Cars                     Trucks                         Total

Total                  2049                    334                             2383

x                          239                      45                                284

p                        0.1166                   0.1347                          0.1191

α=0.05

Hypothesis will be  :

H_{0}:p_{1} =p_{2}

H_{1} :p_{1} < p_{2}

It is a left tailed test at 0.05 significance.

Standard errors of p=\sqrt{p(1-p)/n}

=\sqrt{(0.1191*0.8809)/2383}

=\sqrt{0.1049/2383}        

=0.0066

Test statistic Z=p difference/standard error

=(0.1166-0.1347)/0.0066

=-0.0181/0.0061

=-2.967

p value=0.001505<5%

Since p is less than 5% we reject null hypothesis.

We cannot calculate standard deviation so  we cannot calculate confidence interval.

Hence there is statistical evidence at 5% significance level to support that commercial truck owners violate laws requiring front license plates at a higher rate than owners of passenger cars.

Learn more about z test at brainly.com/question/14453510

#SPJ4

5 0
2 years ago
Please Help ME : The graph models the relationship between the ticket price for a concert and the expected profits.
yuradex [85]

Answer:

18,000 is the maximum and indicates highest profit

Step-by-step explanation:

sorry for leaving that second part out

7 0
2 years ago
What is the next greatest number of tens 384
Umnica [9.8K]

Answer:

9

step by step explanation :

390

<em>Hope</em><em> this</em><em> helps</em><em> </em><em>:</em><em>)</em>

5 0
3 years ago
How do you do this problem?
exis [7]
X=-.5, it’s less than 0, and concave up & increasing in this situation are the same.
3 0
2 years ago
Read 2 more answers
Six machines at a certain factory operate at the same constant rate. If four of these machines, operating simultaneously, take 2
andreyandreev [35.5K]

Answer:

A) 9

Step-by-step explanation:

No. of hours required: 4×27 = 108

If 6 machines working:

108÷6 = 18 hours

27 - 18 = 9 hours fewer

7 0
3 years ago
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