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1 year ago

5

A table of values of a linear function is shown below. Find the output when the input is n. Type your answer in the space provid

ed.
Input 1 2 3 4 n
Output 3 1 0 -1 -3

1 answer:

mart [117]1 year ago

4 0

Answer:

-3

Step-by-step explanation:

If I'm reading the question correctly, the table of data has the answer:

<u>Input </u> <u>Output</u>

1 3

2 1

3 0

4 -1

<u><em> n -3</em></u>

<u></u>

<u></u>

<u></u>

<u></u>

<u></u>

<u></u>

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A survey of 76 commercial airline flights of under 2 hours resulted in a sample average late time for a flight of 2.55 minutes.

nika2105 [10]

Answer:

The best point of estimate for the true mean is:

$\hat \mu = \bar X = 2.55$

$2.55-1.96\frac{12}{\sqrt{76}}=-0.148$

$2.55+1.96\frac{12}{\sqrt{76}}=5.248$

Since the time can't be negative a good approximation for the confidence interval would be (0,5.248) minutes. The interval are tellling to us that at 95% of confidence the average late time is lower than 5.248 minutes.

Step-by-step explanation:

Information given

$\bar X=2.55$ represent the sample mean for the late time for a flight

$\mu$ population mean

$\sigma=12$ represent the population deviation

n=76 represent the sample size

Confidence interval

The best point of estimate for the true mean is:

$\hat \mu = \bar X = 2.55$

The confidence interval for the true mean is given by:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

The Confidence level given is 0.95 or 95%, th significance would be $\alpha=0.05$ and $\alpha/2 =0.025$ . If we look in the normal distribution a quantile that accumulates 0.025 of the area on each tail we got $z_{\alpha/2}=1.96$

Replacing we got:

$2.55-1.96\frac{12}{\sqrt{76}}=-0.148$

$2.55+1.96\frac{12}{\sqrt{76}}=5.248$

Since the time can't be negative a good approximation for the confidence interval would be (0,5.248) minutes. The interval are tellling to us that at 95% of confidence the average late time is lower than 5.248 minutes.

7 0

2 years ago

Please help dont answer if u dont know it

jolli1 [7]

Answer:

D

Step-by-step explanation:

using the formula y = mx + b we can plug in the m and the b, getting

y = -5x - 9

7 0

2 years ago

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Solve the porpotion. What is 10.7% of 485

just olya [345]

Answer: 51.895

Step-by-step explanation:

10.7 percent *485 =

(10.7:100)*485 =

(10.7*485):100 =

5189.5:100 = 51.895

Now we have: 10.7 percent of 485 = 51.895

Question: What is 10.7 percent of 485?

Percentage solution with steps:

Step 1: Our output value is 485.

Step 2: We represent the unknown value with $x$x.

Step 3: From step 1 above,$485=100\%$485=100%.

Step 4: Similarly, $x=10.7\%$x=10.7%.

Step 5: This results in a pair of simple equations:

$485=100\%(1)$485=100%(1).

$x=10.7\%(2)$x=10.7%(2).

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

$\frac{485}{x}=\frac{100\%}{10.7\%}$

485

x=

100%

10.7%

Step 7: Again, the reciprocal of both sides gives

$\frac{x}{485}=\frac{10.7}{100}$

x

485=

10.7

100

$\Rightarrow x=51.895$⇒x=51.895

Therefore, $10.7\%$10.7% of $485$485 is $51.895$51.895

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Maury has 8 plants three are flowers and 5 are ferns what fraction oh his plants are frens

RideAnS [48]

(5/8) 5 out of the 8 are ferns, which would make the fraction 5/8

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Select all that apply.

topjm [15]

Answer:

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