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ycow [4]
3 years ago
13

Pleses help me thank you

Mathematics
1 answer:
OLEGan [10]3 years ago
4 0

when solving for y

y = -7x/3-6

 so y does not vary directly with x

 the answer is no

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I need help with INTERIM CHECKPOINT problem
morpeh [17]
The answer is d I think.
6 0
3 years ago
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 225 vinyl? glov
romanna [79]

Answer:

a)

H₀: ρ₁ ≤ ρ₂

H₁: ρ₁ > ρ₂

b)

Z= \frac{('p_{1} - 'p_{2}) - (p_{1} - p_{2})}{\sqrt{'p(1-'p)[\frac{1}{n_1} + \frac{1}{n_2} ]} } ≈ N(0;1)

c)

p-value < .00001

d)

Reject the null hypothesis.

The population proportion vinyl gloves that leak viruses is greater than the population proportion of latex gloves that leak viruses.

Step-by-step explanation:

Hello!

The objective is to test if the population proportion of vinyl gloves that leak viruses (population 1) is greater then the population proportion of latex gloves that leak viruses (population 2).

Sample 1 (Vinyl)

n₁= 225

Sample proportion 'ρ₁= 0.60

Sample 2 (Latex)

n₂= 225

Sample proportion 'ρ₂= 0.09

Pooled proportion: 'ρ= (x₁+x₂)/(n₁+n₂)= ( 'ρ₁ + 'ρ₂)/2= (0.60 + 0.09)/2= 0.345 ≅0.35

The hypothesis is:

H₀: ρ₁ ≤ ρ₂

H₁: ρ₁ > ρ₂

α: 0.05

The statistic to use is a pooled Z

Z= \frac{('p_{1} - 'p_{2}) - (p_{1} - p_{2})}{\sqrt{'p(1-'p)[\frac{1}{n_1} + \frac{1}{n_2} ]} } ≈ N(0;1)

The critical region is one-tailed to the right (positive), the critical value is:

Z_{1-\alpha } = Z_{0.95} = 1.64

If Z ≥ 1.64, you will reject the null hypothesis.

If Z < 1.64, you will not reject the null hypothesis.

Z= \frac{(0.6 - 0.09) - (0}{\sqrt{0.35(1-0.35)[\frac{1}{225} + \frac{1}{225} ]} } = 11.34

Since the calculated Z- value is greater than the critical value, the decision is to reject the null hypothesis. The population proportion vinyl gloves that leak viruses is greater than the population proportion of latex gloves that leak viruses.

P-value approach:

p-value < .00001

If you compare with the level of signification, you reach the same decision.

I hope it helps!

8 0
3 years ago
Un frasco de jugo tiene una capacidad de 3/8 de litro ¿cuantos frascos se pueden llenar con cinco litros ?
erastovalidia [21]

Answer:

5

Step-by-step explanation:

4 0
3 years ago
Kim's softball team is playing in the championship game. They are losing by a score of 171717 to 666. There are 444 innings to g
anzhelika [568]

171717-666 = 171051 runs are needed.

171051 / 444 = 385.25 points per inning are needed

385.25 / 111 = 3.47 runs are needed per inning, round up to 4


6 0
3 years ago
If f (x) =3 +10 and g(x) =2 - 4, find (f - g) (x)
m_a_m_a [10]

Answer:

x=3.22

Step-by-step explanation:

6 0
3 years ago
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