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3 years ago

If a fair coin is tossed 9 times, what is the probability, to the nearest thousandth, of

Mathematics

1 answer:

kozerog [31]3 years ago

6 0

Answer:

=0.444

Step-by-step explanation:

probability= expected outcome = 4

total outcome 9

4 into decimal = 0.444( to the nearest thousandths- 3dp)

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Route bought a bicycle for 1200 she later sold it for 800 what was her loss

elixir [45]

Answer:

-400

Step-by-step explanation:

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3 years ago

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5 Discuss FIVE important steps relating to career decision making

QveST [7]

Identify what you are good at,
Subjects you are good in,
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2 years ago

Some college graduates employed full-time work more than hours per week, and some work fewer than hours per week. We suspect tha

Alex_Xolod [135]

Answer:

a)Null hypothesis: $\mu =40$

Alternative hypothesis: $\mu \neq 40$

b) A Type of error I is reject the hypothesis that $\mu$ is equal to 40 when is fact $\mu is equal to 40c) We can commit a Type II Error, since by definition "A type II error is the non-rejection of a false null hypothesis and is known as "false negative" conclusion"Step-by-step explanation:Assuming this problem: "Some college graduates employed full-time work more than 40 hours per week, and some work fewer than 40 hours per week. We suspect that the mean number of hours worked per week by college graduates, [tex]\mu$ , is different from 40 hours and wish to do a statistical test. We select a random sample of college graduates employed full-time and find that the mean of the sample is 43 hours and that the standard deviation is 4 hours. Based on this information, answer the questions below"

Data given

$\bar X=43$ represent the sample mean

$\mu$ population mean (variable of interest)

s=4 represent the sample standard deviation

n represent the sample size

Part a: System of hypothesis

We need to conduct a hypothesis in order to determine if actual mean is different from 40 , the system of hypothesis would be:

Null hypothesis: $\mu =40$

Alternative hypothesis: $\mu \neq 40$

Part b

In th context of this tes, what is a Type I error?

A Type of error I is reject the hypothesis that $\mu$ is equal to 40 when is fact [tex]\mu is equal to 40

Part c

Suppose that we decide not to reject the null hypothesis. What sort of error might we be making.

We can commit a Type II Error, since by definition "A type II error is the non-rejection of a false null hypothesis and is known as "false negative" conclusion"

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3 years ago

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Find the sum and express it in simplest form (6y-2c+2)+(-3y+4c)

Taya2010 [7]

Well, kid all you have to do is add like terms and place the subjected terms in alphabetical order.
1. (6y-2c+2)+(-3y+4c)
2. 6y + - 3y = 3y
3. -2c+4c =2c
4. the positive in the first set of parenthesis has to term other than its number by itself. (so it remains alone and only positive 2)
5. take all the separate term answers and add them into a complete expression- 3y + 2c + 2: and that is all

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3 years ago

Graph identify the solution. y =-3/5x-3. y=3

amid [387]

Answer:

X= -10

Step-by-step explanation:

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3 years ago