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3 years ago

Write 9 is greater than y

Mathematics

2 answers:

Yanka [14]3 years ago

6 0

9>y
Thats it.....
Do you need something else or just that?

Ludmilka [50]3 years ago

3 0

Its as simple as 9>y

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Find the 12th term of thsi sequence 5 12 19

enyata [817]

It's adding 7 each time. So...

5, 12, 19, 26, 33, 40, 47, 54, 61, 68, 75, and

82

4 0

3 years ago

A random sample of 100 observations from a quantitative population produced a sample mean of 22.8 and a sample standard deviatio

natima [27]

Answer:

We conclude that the population mean is 24.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 24

Sample mean, $\bar{x}$ = 22.8

Sample size, n = 100

Alpha, α = 0.05

Sample standard deviation, s = 8.3

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 24\\H_A: \mu \neq 24$

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

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{22.8 - 24}{\frac{8.3}{\sqrt{100}} } = -1.44$

We calculate the p-value with the help of standard z table.

P-value = 0.1498

Since the p-value is greater than the significance level, we accept the null hypothesis. The population mean is 24.

Now, $z_{critical} \text{ at 0.05 level of significance } = \pm 1.96$

Since, the z-statistic lies in the acceptance region which is from -1.96 to +1.96, we accept the null hypothesis and conclude that the population mean is 24.

7 0

3 years ago

Consider the population consisting of all computers of a certain brand and model, and focus on whether a computer needs service

eimsori [14]

Answer and explanation:

A. What is the probability that more than half of the sample of 100 computers would need warranty service?

What is the probability that more than half of the sample of 100 computers would not need warranty service?

What is the probability that out of sample of 100 more than 20% would require warranty service?

B. If our sample of 100 computers of that brand and model reveals that 30 computers need warranty service, does this give a valid conclusion that all such computers in the population would require about 30% warranty service or less?

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3 years ago

There are 10 books on a shelf of which 4 are paperbacks

kow [346]

Explain more please

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3 years ago

Is y=-3/4x + 8 linear?

maxonik [38]

Answer:

Yes

Step-by-step explanation: