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Y_Kistochka [10]
3 years ago
10

A survey of students at a particular college showed that 33% of them prefer the American Heritage Dictionary (as opposed to Webs

ter’s or Random House). If 30 students are randomly surveyed, find the probability that exactly 6 of them prefer the American Heritage Dictionary.
Mathematics
1 answer:
Juliette [100K]3 years ago
7 0

Answer:

5.13 % to the nearest hundredth.

Step-by-step explanation:

This is a Binomial Distribution .

The required probability

= 30C6 (0.33)^6 (0.67)^(30-6)

= 0.051345

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PLS I WILL GIVE BRAINLIEST
Nana76 [90]

Answer:

208 cm^2

Step-by-step explanation:

We can find the area of the net by adding up the area of each of the 6 rectangles that make up the net. Since two of each rectangle are the same, we only have to find the area of the 3 different sized rectangles and multiply each by 2.

Rectangle pairs are:

  • Left rectangle and right rectangle
  • Top rectangle and the rectangle above the bottom rectangle
  • Bottom rectangle and the rectangle surrounded by all for sides

Now, let's solve the question.

Left rectangle:

6 x 4 = 24, rectangle has area of 24 squared cm

Top rectangle:

6 x 8 = 48, rectangle has area of 48 squared cm

Bottom rectangle:

4 x 8 = 32, rectangle has area of 32 squared cm

Add up the areas:

(24 x 2) + (48 x 2) + (32 x 2) = 208

The rectangle has a surface area of 208 squared cm

4 0
3 years ago
Which number produces an irrational number when multiplied by 1/3
MArishka [77]

We can simply observe that.

  1. 0.777... is rational, because it is a number with infinite but repeating decimal part.
  2. 1/3 is rational, because it's the division between two integers
  3. -\sqrt{16}=-4, so this is rational as well.

Since the product of two rational numbers is always rational, we have that

0.\bar{7}\cdot \dfrac{1}{3},\quad \dfrac{1}{3}\cdot \dfrac{1}{3},\quad -4\cdot \dfrac{1}{3}

are all rationals, since they are the product of two rationals.

On the other hand, we have

\sqrt{27}=\sqrt{9\cdot 3}=3\sqrt{3}

and thus

3\sqrt{3}\cdot \dfrac{1}{3}=\sqrt{3}

which is irrational.

3 0
3 years ago
HELP! the student council at woodlands middle school is planning a field trip. they polled randomly selected teachers and studen
gregori [183]

Answer:

c

Step-by-step explanation:

because on the chart is says 19% under burgers for teachers.

Tell me if it is right.

8 0
3 years ago
3)A triangle has all integer side lengths and two of those sides have lengths 9 and 16. Consider the altitudes to the three side
Art [367]

Answer: 2

Step-by-step explanation:

16/9=1.7

=Approximately=2

3 0
4 years ago
Read 2 more answers
Marianne wanted to know students' opinion on the new schedule at school. She survey's the first
Sonja [21]

I think it is a Convience Sampling.

6 0
3 years ago
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