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igor_vitrenko [27]
3 years ago
14

30 minutes to 90 minutes as a fraction in lowest terms

Mathematics
1 answer:
Svetllana [295]3 years ago
6 0
<h2>Answer: 1/3</h2>

Step-by-step explanation: 30:90 = 10:30 =1:3 = 1/3

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Y=|-3x 2|-4 what's the answer
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Do you mean Y=|-3x- 2|-4 or Y=|-3x+2|-4
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3 years ago
The population of a town increases 14% in 2 years. if the population was 6000 originally, what is the population after the incre
Brilliant_brown [7]
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7 0
3 years ago
Evaluate how organizations can use one-sample hypothesis testing to determine if there are performance issues in the organizatio
Margarita [4]

Answer:

Organizations can use one-sample hypothesis test to determine if there are performance issues in many ways.

It can be applied to the performance of a sector, a machine, a product, an advertising campaing, etc.

For example, we can take the example of a machine. It may be claimed that a specific machine performs significantly worse than the average.

This average would be the population mean: the average performance of the machines of the same type or process.

Then, a sample of the performance of the machine in study is taken and the hypothesis test can be performed to test the claim that this machine performs significantly worse.

Step-by-step explanation:

For example, we have an historic performance for this type of machine of 100 units a day. The machine A in study is sampled 14 days and have a performance of 92 units a day, with a sample standard deviation of 12 units/day. We have to test the claim that the machine A makes less units per day than the average.

Then, the null and alternative hypothesis are:

H_0: \mu=100\\\\H_a:\mu< 100

The significance level is 0.05.

The sample has a size n=14.

The sample mean is M=92.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=12.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{12}{\sqrt{14}}=3.2071

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{92-100}{3.2071}=\dfrac{-8}{3.2071}=-2.4944

The degrees of freedom for this sample size are:

df=n-1=14-1=13

This test is a left-tailed test, with 13 degrees of freedom and t=-2.4944, so the P-value for this test is calculated as (using a t-table):

P-value=P(t

As the P-value (0.0134) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that machine A produces significantly less units per day than the average.

3 0
3 years ago
Which make a triangle 3 4 5. 3 5 7. 1 3 4. 2 8 9.
adelina 88 [10]

i don't understand this question but I will say 1/3/4

8 0
2 years ago
Could somebody help me with this question please?
ELEN [110]
The answer would be 20. Because the whole angle would have to be 90 so you already have 30 so that leaves you with 60 which you divide by 3 and gives you 20
4 0
3 years ago
Read 2 more answers
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