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4 years ago

The line plots show the number of minutes two different age groups of teenagers spent online the previous week.

Mathematics

2 answers:

jarptica [38.1K]4 years ago

7 0

Answer:

Step-by-step explanation:

13-15 year olds:

Range: 13

Mean: 27.4

16-18 year olds:

Range:24

Mean: 28.05

Therefore,

1) the range is greater for set two

2) the mean is greater for set two as well

Alex4 years ago

3 0

Answer:

1. B

2. C

Step-by-step explanation:

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aev [14]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

7/4 as a whole number

Ne4ueva [31]

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3 years ago

Identify the examples as primary sources or secondary sources.

algol13

Answer:

Primary : letters, artifacts, contracts

Secondary : documentaries, encyclopedias, biographies

Step-by-step explanation:

(I'm not too sure about contracts, so you might want to check yourself for that one)

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3 years ago

Two telephone calls come into a switchboard at random times in a fixed one-hour period. Assume that the calls are made independe

svp [43]

Answer:

0.25

Step-by-step explanation:

From the given information:

Since the times are uniform distributed over the one hour period (0,1):

Then;

$f_1(y_1) = 1$

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So, $Y_1$ and $Y_2$ are independent; then:

$f(y_1|y_2) = f_1(y_1)f_2(y_2) \\ \\ = 1(1) = 1$

$P(Y_1\le 0.5 Y_2 \le 0.5) = \int ^{0.5}_{0} \int ^{0.5}_{0} f(y_1,y_2) dy_{2}dy_{1}$

$\implies \int ^{0.5}_{0} \int ^{0.5}_{0} (1) dy_{2}dy_{1}$

$= \dfrac{1}{4}$

= 0.25

3 0

3 years ago

A. What is the perimeter of the rectangle?<br> B. What is the area of the rectangle?

Archy [21]

Answer:

A) perimeter = 3 + 3 + 8 + 8 = 22 units

B) area = 3 x 8 = 24 units²

Step-by-step explanation:

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3 years ago