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a_sh-v [17]
2 years ago
10

these are the means and standard deviations for samples of building heights in two different cities. city a city b mean: 120 ft

mean: 240 ft standard deviation: 20 ft standard deviation: 12 ftselect the two true statements.
Mathematics
1 answer:
Kazeer [188]2 years ago
4 0

The average building height and the standard deviation for two separate cities' samples are shown. The true statements are:

City A’s heights are more spread out than city B’s heights.

City A has a lower average height than city B.

<h3>What is average?</h3>

In daily life, an average is a number chosen to represent a group of numbers; it is often the sum of the numbers divided by the total number of numbers in the group (the arithmetic mean). The average of the integers 2, 3, 4, 7, and 9, for instance, is 5, which equals 25. An average could alternatively be another statistic like the median or mode, depending on the situation. The median is sometimes used in place of the mean since the mean would be unnaturally high if it included the personal incomes of a few billionaires. The median is the amount below which 50% of personal incomes fall and above which 50% of personal incomes rise.

To learn more about average ,visit:

brainly.com/question/15570401

#SPJ4

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Rod is a drummer who purchases his drumsticks online. When practicing with the newest pair, he notices they feel heavier than us
Andrews [41]

Answer:

The probability of the stick's weight being 2.33 oz or greater is 0.41%.

Step-by-step explanation:

Test statistic (z) = (weight - mean)/sd

weight of stick = 2.33 oz

mean = 1.75 oz

sd = 0.22 oz

z = (2.33 - 1.75)/0.22 = 2.64

The cumulative area of the test statistic is the probability that the weight is 2.33 oz or less. The cumulative area is 0.9959.

The probability the weight is 2.33 or greater = 1 - 0.9959 = 0.0041 = 0.41%

6 0
3 years ago
Robin Hartman earns $600 per week plus 3% of sales over $6,500. Robin's week sales are $14,000. How much does Robin earn
Karolina [17]

Answer:

$825

Step-by-step explanation:

Given that :

Weekly earning = $600 plus 3% of sales over $6500

If weekly sales = $14000

How much will Robin earn

Robin's earning will be:

Flat weekly pay + 3% of amount over 6500

$600 + 3%(weekly sales - 6500)

$600 + 0.03(14000 - 6500)

$600 + 0.03(7500)

$600 + $225

= $825

5 0
3 years ago
Sabrina has a rectangular swimming pool in her backyard. She fills it with water to the depth of 4 feet. The water in the pool h
aleksklad [387]

Answer: 20\times 20, 16\times 25, 10\times 40

Step-by-step explanation:

Given

The volume of the pool is 1600\ ft^3

Depth of water is d=4\ ft

Suppose A is the base of the pool

\Rightarrow V=A\times d\\\Rightarrow 1600=A\times 4\\\Rightarrow A=400\ ft^2

This area can be written as

\Rightarrow A=10\ ft\times 40\ ft\ or\\\Rightarrow A=16\ ft\times 25\ ft\ or\\\Rightarrow A=20\ ft\times 20\ ft

7 0
3 years ago
Solve for k<br><br> 11/8=k/4<br><br> k= ???
lara [203]

Answer:

5.5

Step-by-step explanation:

11/8 = k/4

If you divide from the denominator you have to divide from the nominator

so 11/2=5.5

4 0
3 years ago
Read 2 more answers
What is the quotient of 3/5 and 1/10<br> A.1/6<br> B.1/3<br> C.3<br> D.6
DerKrebs [107]
Hello! And thank you for your question!

Quotient = division.

3/5 divided by 1/10

First use the rule a divided by b/c = a x c/b:

3/5 times 10

Then simplify:

30/5 = 6

Final Answer:

D. 6
6 0
3 years ago
Read 2 more answers
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