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1 year ago

Please help I need to finish ASAP.

Mathematics

1 answer:

S_A_V [24]1 year ago

6 0

Answer:

1/500 is answer.............

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What is the solution to these equations y= 2x +1 and x +2y= 27

Llana [10]

Answer:

The first one is -1/2

the second one is x+2y-27=0

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2 years ago

What would the inter-rater reliability be for a 50-item measure in which the number of agreements between Rater 1 and Rater 2 wa

nlexa [21]

What would the inter-rater reliability be for a 50-item measure in which the number of agreements between Rater 1 and Rater 2 was 45?
C) 0.90

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2 years ago

Consider the following hypothesis test: H 0: 20 H a: < 20 A sample of 60 provided a sample mean of 19.5. The population stand

viva [34]

Answer:

We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 60

Sample mean, $\bar{x}$ = 19.5

Sample size, n = 60

Alpha, α = 0.05

Population standard deviation, σ = 1.8

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 20\\H_A: \mu < 20$

We use One-tailed z test to perform this hypothesis.

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{19.5 - 20}{\frac{1.8}{\sqrt{60}} } = -2.151$

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.64$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.

5 0

3 years ago

To be a vertical angle, the angles have to be next to each other. <br> A. True<br> B. False

12345 [234]

False, vertical angles are not next to each other but opposite of each other

3 0

3 years ago

Factor out the coefficient of the variable 1.7j-3.4

Ad libitum [116K]

Here you would factor out a 1.7 because that is the coefficient in front of the j. When you factor, you are essentially dividing each term by the value you are factoring out
1.7j/1.7=j
-3.4/1.7=-2

So the final answer is 1/7(j-2)

Hope this helps<span />

6 0

2 years ago

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