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vlada-n [284]
2 years ago
15

What is the slope of the function?

Mathematics
1 answer:
Zolol [24]2 years ago
3 0
The slope of the function is 2!
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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
3 years ago
What is the equation of a line whose slope is 3/4 and y-intercept is 6
TEA [102]

Answer:

y=\frac{3}{4}x +6

Step-by-step explanation:

The equation of a line is represented by y=mx+b, where m is the slope and b is the y-intercept. Therefore, plug in the values you stated into the equation.

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3 years ago
Round 150,893 to the nearest thousand.
Kaylis [27]

Answer:

151,000

Step-by-step explanation:

7 0
2 years ago
The cost of a jacket increased from $95.00 to $107.35. what is the percentage increase of the cost of the jacket?
lidiya [134]
It would be 35%. Hope this helps.
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Ellie has 5/8 of a cup of powdered sugar. She sprinkles 3/10 of the sugar onto a plate of
Klio2033 [76]

Answer:

She sprinkles 3/10 of a cup of powdered sugar on the brownies.

Step-by-step explanation:

4 0
2 years ago
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