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2 years ago

What is the median of the data set? 15, 19, 20, 22, 26, 30, 31

Mathematics

1 answer:

Paladinen [302]2 years ago

7 0

Answer:

C. 22

Step-by-step explanation:

The median is the middle number of the set if the numbers are in order from least to greatest.

This set of numbers is in order, so the median is the middle number = 22

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jamal plans to save for a new scooter that costs 48 dollars. the sales tax rate is 5% how much will jamal need to save

ra1l [238]

50.40 is the answer

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3 years ago

Kenny and Johnny went to the water park. Jonny brought $1.50 ice cream bar. Write an expression to represent the amount the two

Luba_88 [7]

P=2(1.50)
Since it is just the two of them it should he multiplied twice which would equal the total price "p".

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3 years ago

Read 2 more answers

Five students visiting the student health center for a free dental examination during National Dental Hygiene Month were asked h

Andrews [41]

Answer:

[0.9 months, 32.69 months]

Step-by-step explanation:

The mean is

$\bf \bar x=\frac{5+17+12+21+29}{5}=16.8$

The standard deviation is

$\bf s=\sqrt{\frac{(5-16.8)^2+(17-16.8)^2+(12-16.8)^2+(21-16.8)^2+(29-16.8)^2}{5}}=8.1092$

Now, we have to find two values a and b such that the area under the Normal curve with mean 16.8 and standard deviation 8.1092 between a and b equals <em>95% = 0.95 </em>

Using a spreadsheet we find these values are

a = 0.906

b = 32.694

<h3>(See picture) </h3>

and our 95% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population of students participating in the program rounded to two decimal places is

[0.9 months, 32.69 months]

4 0

3 years ago

a leaky faucet is losing water and is filling a 5-gallon bucket every 20 hours. At that rate, how many gallons of water will the

Arisa [49]

You can either scale down so you can get to 48 hours or just multiply from 20 to 48 and I'll explain both ways.
Scaling down:
You can find how many hours it takes to get to 1 gallon in the bucket by dividing
20÷5=4; It takes 4 hours to fill it up to one gallon.
You can now divide 48 by 4 to see how many gallons it'll take up to 48 hours.
48÷4=12
Quicker:
Divide 48 by 20;
48÷20=2.4
Now multiply since it filled it up to 5 gallons.
2.4×5=12
It'll fill 12 gallons in 48 hours.
Tell me if this helps!!

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3 years ago

Read 2 more answers

Y=2x y=0.50x+18 solve by substitution

prohojiy [21]

Answer:

y = 18 + 0.50x

Step-by-step explanation:

I think that is the answer.

6 0

2 years ago