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2 years ago

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4. The ages of a group of tourists on a bus are 3, 6, 9, 11, 15, 26, 27, 30, 30, 31, 32. What is the standard deviation of this

tour group? * a. 10.711 O b. 11.234 O c. 114.726 O d. 126.202

1 answer:

ioda2 years ago

8 0

Answer: b. 11.234

Step-by-step explanation:

used ti84

put in values in list 1

go into 1-var stats

find Sx which is the stand dev for sample

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Naya [18.7K]

Answer:

y = 3/4 x + 25/4

Step-by-step explanation:

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3 years ago

Kyle spends $32.35 on a bag of soil

Brilliant_brown [7]

Answer:

18

Step-by-step explanation:

32.25-9.85

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2 years ago

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The volume of a right circular cone is 2,279.64 in cubed. If the height of the cone is 18 in, what is the diameter of the cone?

Aleksandr [31]

ANSWER

A. 22 in

EXPLANATION

The volume of a cone is calculated using the formula:

$Volume = \frac{1}{3} \times \pi {r}^{2} h$

It was given that: the volume is 2,279.64 in³

The height of the cylinder is also given as: h=18 in.

We substitute, the given values into the formula to get:

$2279.64= \frac{1}{3} \times (3.14) \times {r}^{2} \times 18$

$2279.64= 18.84 {r}^{2}$

${r}^{2} = \frac{2279.64}{18.84}$

${r}^{2} = 121$

We take positive square root to get;

$r = \sqrt{121}$

$r = 11in$

Therefore the diameter is 2(11) which is equal to 22 inches.

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3 years ago

In a football game, the Bobcats scored all touchdowns, which are worth 7 points each. The Crocodiles scored all field goals, whi

Natalka [10]

Answer: 21points

Step-by-step explanation: 3 times 7 equals 21

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2 years ago

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An office manager spent $4870 on a

Andrews [41]

Answer:

6 chairs

8 desks

Step-by-step explanation:

First, we assume that all 14 items he bought were chairs, if that was to be true then the office manager would spend...

125 x 14 = 1750$

We see that he spent less then he should have so now we start to substitute desks instead of chairs, and we have to keep in mind that if we change 1 chair to a desk then the total will increase by...

515 - 125 = 390$

Now we just find the difference between the needed total and the total that we get if the office manager would by only chairs and then divide the result by 390 in order to find the number of desks, and so we get...

(4870 - 1750) / 390 = 3120 / 390 = 8 desks

And now that we know the number of desks we just subtract the number of desks from 14 and get the number of chairs, and so...

14 - 8 = 6 chairs

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2 years ago