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2 years ago

Helpppppppppp plzzzzz

Mathematics

2 answers:

seropon [69]2 years ago

7 0

4(y-3) = 4*y -4*3
= 4y - 12

Artemon [7]2 years ago

6 0

Answer:

4y - 12

Step-by-step explanation:

Given

4(y - 3) ← multiply each of the terms inside the parenthesis by 4

= 4y - 12

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Conduct the appropriate hypothesis test and compute the test statistic. A company that produces fishing line undergoes random te

andre [41]

Answer:

Option D) Yes, because the test statistic is -2.01

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 30 pound

Sample mean, $\bar{x}$ = 29.1 pounds

Sample size, n = 20

Alpha, α = 0.05

Sample standard deviation, s = 2 pounds

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 30\text{ pounds}\\H_A: \mu < 30\text{ pounds}$

We use one-tailed(left) t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{29.1 - 30}{\frac{2}{\sqrt{20}} } = -2.012$

Now,

$t_{critical} \text{ at 0.05 level of significance, 19 degree of freedom } = -1.729$

Since,

$t_{stat} < t_{critical}$

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis. Thus, there were enough evidence to conclude that the fishing line breaks with an average force of less than 30 pounds.

Option D) Yes, because the test statistic is -2.01

5 0

3 years ago

What is 0.95 in simplest form

solong [7]

$0.95 \times \frac{100}{100} = \frac{95}{100} = \frac{19 \times 5}{20\times 5}\\\\ = \boxed{\bf{\frac{19}{20}}}$

0.95 in simplest form is 19/20

5 0

2 years ago

I need help with this ( please help me )

Gnom [1K]

Answer:

<7=120

<8=60

Step-by-step explanation:

<2 and <7 are alternate exterior angles. <7 and <8 are complementary sor just do 180-120 and you will get 60

3 0

2 years ago

If 6 1/4 of potatoes cost 40.75 how much would one pound cost

Darya [45]

Answer 6 dollars and 52 cents

Step-by-step explanation: 6 1/4 = (6.25)

40.75/6.25 = 6.52 per unit price

6 0

2 years ago

George scored 70, 92, 70, 90, and 95 on five physics tests. The mean, median, and mode of his scores are given below. Mean = 83.

oksano4ka [1.4K]

Answer:

mean; the average of George's scores is the mean = 83.4

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers