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ICE Princess25 [194]
3 years ago
8

Evaluate 5t + 4 if t=3 PLEASE HURRY! I'M TIMED!

Mathematics
1 answer:
Wittaler [7]3 years ago
4 0
Substitute the value of the variable into the equation and simplify.
19
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URGENT 20 points describe the graph of the function g(x) =(-0.8 X) is related to the graph of the parent function. *
MAXImum [283]

Answer: G(x) is compressed horizontally and reflected over the y-axis

Step-by-step explanation:simple

8 0
2 years ago
An automobile manufacturer has given its van a 59.5 miles/gallon (MPG) rating. An independent testing firm has been contracted t
LekaFEV [45]

Answer:

The pvalue of the test is 0.0124 < 0.1, which means that there is sufficient evidence at the 0.1 level to support the testing firm's claim.

Step-by-step explanation:

An automobile manufacturer has given its van a 59.5 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the actual MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating:

At the null hypothesis, we test if the mean is the same, that is:

H_0: \mu = 59.5

At the alternate hypothesis, we test that it is different, that is:

H_a: \mu \neq 59.5

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

59.5 is tested at the null hypothesis:

This means that \mu = 59.5

After testing 250 vans, they found a mean MPG of 59.2. Assume the population standard deviation is known to be 1.9.

This means that n = 250, X = 59.2, \sigma = 1.9

Value of the test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{59.2 - 59.5}{\frac{1.9}{\sqrt{250}}}

z = -2.5

Pvalue of the test and decision:

The pvalue of the test is the probability of finding a mean that differs from 59.5 by at least 0.3, which is P(|Z|>-2.5), which is 2 multiplied by the pvalue of Z = -2.5.

Looking at the z-table, Z = -2.5 has a pvalue of 0.0062

2*0.0062 = 0.0124

The pvalue of the test is 0.0124 < 0.1, which means that there is sufficient evidence at the 0.1 level to support the testing firm's claim.

5 0
3 years ago
What is the equivalent expression of y-0.32y
Dahasolnce [82]
Y - 0.32y = (1 - 0.32)y = 0.68y
5 0
3 years ago
Read 2 more answers
Please very urgent!!!
OleMash [197]

Answer:

216

Step-by-step explanation:

hindi pa sure pero yan

7 0
3 years ago
will drinks 1.09 liters of juice. richard drinks 0.987 liters of juice. how much more juice does will drink then Richard ​
Andre45 [30]

Answer:   .103

Step-by-step explanation:

4 0
3 years ago
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