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blsea [12.9K]
2 years ago
5

10

Mathematics
1 answer:
fiasKO [112]2 years ago
6 0

Answer:

  (x, y) = (7, 3)

Step-by-step explanation:

The solution is the point where the lines cross. The coordinates of that point are ...

  (x, y) = (7, 3)

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Suppose that the mean time that visitors stay at a museum is 94.2 minutes with a standard deviation of 15.5 minutes. The standar
Maurinko [17]

Answer:

94.2 -0.994*3.1 = 91.1186

94.2 +0.994*3.1 = 97.2814

And the 68% confidence interval is given by (91.1186, 97.2814)

Step-by-step explanation:

For this case we know that mean time that visitors stay at a museum is given by:

\bar X = 94.2

The standard deviation is given by:

s= 15.5

And the standard error is given by:

SE = \frac{s}{\sqrt{n}} =3.1

And we want to interval captures 68% of the means for random samples of 25 scores and for this case the critical value can be founded like this using the normal standard distribution or excel:

z_{\alpha/2}= \pm 0.994

We can find the interval like this:

\bar X \pm ME

And replacing we got:

94.2 -0.994*3.1 = 91.1186

94.2 +0.994*3.1 = 97.2814

And the 68% confidence interval is given by (91.1186, 97.2814)

7 0
3 years ago
What is the mean of the sum of positive single digit integers
Rus_ich [418]

I am pretty sure it depends on what your numbers are
6 0
3 years ago
The results of a poll show that the percent of people who want a new restaurant is in the interval (62%, 88%). There are 109,482
uranmaximum [27]

Answer:

(67879,96344)

Step-by-step explanation:

I took the test

8 0
3 years ago
Read 2 more answers
What 2/9rounded to the nearest whole number
Arte-miy333 [17]
The answer is 3 because if you were to round 2.9 the next whole up from that is 3
4 0
2 years ago
During the day, Sam spent $4.85 on lunch. He also bought two books for $7.95 each at the end of the day he had $8.20 left.How mu
ch4aika [34]

We can add the money he spent to the money he had left to find the total.

4.85 + 15.9 + 8.20 = 28.95


He started with 28.95

6 0
2 years ago
Read 2 more answers
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