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sdas [7]
3 years ago
11

Ace gained $ 176 by selling 32 meters cloth for $1496. Find his loss per meters she sold it for $1276​

Mathematics
1 answer:
nasty-shy [4]3 years ago
5 0

Answer:xcvxvxcvxcvxcvc

Step-by-step explanation:

bcvbcvbcvb

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The Scottsdale fire department aims to respond to fire calls in 4 minutes or less, on average. Response times are normally distr
IgorC [24]
<h2><u>Answer with explanation</u>:</h2>

Let \mu be the population mean.

As per given , we have

H_0:\mu \leq4\\\\ H_a: \mu >4

Since the alternative hypothesis is right-tailed , so the test is a right-tailed test.

Also, population standard deviation is given \sigma=1 , so we perform one-tailed z-test.

Test statistic : z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

, where \mu = Population mean

\sigma = Population standard deviation

n= sample size

\overline{x} = Sample mean

For n= 18 , \overline{x}=4.50 , \sigma=1 , \mu =4, we have

z=\dfrac{4.5-4}{\dfrac{1}{\sqrt{18}}}\approx2.12

P-value (for right tailed test): P(z>2.12) = 1-P(z≤ 2.12)  [∵ P(Z>z)=1-P(Z≤z)]\

=1- 0.0340=0.9660

Decision : Since P-value(0.9660) > Significance level (0.01), it means we are failed to reject the null hypothesis.

[We reject null hypothesis if p-value is larger than the significance level . ]

Conclusion : We do not have sufficient evidence to show that the goal is not being met at α = .01 .

3 0
3 years ago
If 75 g of liquid water ( C = 4.18 j/g C ) in a calorimeter changes temperature from 25 C to 75 C, how much heat was transferred
levacccp [35]
The answer is 157kJ

formula: q=mcT

q= 75 g x 4.18 J/goC x 50 oC
q= 157 kJ
4 0
3 years ago
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URGENT NEED IMMEDIATE SUPPORT WILLING TO GIVE BRAINLY
frozen [14]

4 hours for 18

7 hours for 25.50

Difference in hours: 7-4 = 3

Difference in cost: 25.50 - 18 = 7.50

7.50 / 3 = 2.50

A. They charge 2.50 per hour.

B. 2.50 x 4 = 10

18 - 10 = 8

The flat fee is 8 dollars

C. 8 + (2 x 2.50) = 13 dollars

8 0
2 years ago
Which sixth-grade student lives the farthest from school?<br> Is this a statistical question?
MAVERICK [17]

Answer:

Yes

Step-by-step explanation:

Becuase a statistical question is  "one that can be answered by collecting data and where there will be variability in that data" you can collect data to find out

7 0
3 years ago
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Which inequality is true if p = 3.4 ?
Anastaziya [24]

Answer:

the shape isnt angled thats what it means

Step-by-step explanation:

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