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3 years ago

8

Someone, please help me finish my math homework.

1 answer:

Oxana [17]3 years ago

7 0

$0.03=0.03\cdot100\%=3\%\\\\10\%:3\%=\dfrac{10}{3}=3\dfrac{1}{3}$

Answer: 3.3 times more students.

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The number of hours that college students sleep on a week night is approximated by a normal curve with a mean of 7 hours and a s

Tanya [424]

The information above is shown in the normal distribution curve shown below

Step 1 : Find the z-score for 5 hours
$z= \frac{5-7}{1.7} =-1.18$ rounded to 2 dp

Step 2: Read the value of z-score on the z-table
As shown in the second picture, the value z at -1.18 is 0.1190

Step 3: The proportion can be written in percentage form which is 11.90% rounded to 12% to nearest whole number

5 0

4 years ago

In a certain college, 33% of the math majors belong to ethnic minorities. If 7 students are selected at random from the math maj

Digiron [165]

Answer: a) 0.996, b) 0.253, c) 0.02.

Step-by-step explanation:

Since we have given that

Probability of success = Probability of the math majors belong to ethnic minorities = 33% = 0.33 =p

Probability of failure = q = 1-0.33 = 0.67

Number of students selected = 7

a) No more than 5 belong to an ethnic minority

So, using "binomial distribution", we get that

$P(X\leq 5)=\sum^5 _{x=0} ^5C_x(0.33)^x(0.67)^{5-x}=0.996$

b. Exactly three of them belong to an ethnic minority

So, it becomes,

$P(X=3)=^7C_3(0.33)^3(0.67)^4=0.253$

c. None of them belong to an ethnic minority

$P(X=0)=^7C_0(0.33)^0(0.67)^7=0.02$

Hence, a) 0.996, b) 0.253, c) 0.02.

8 0

3 years ago

Find the next two terms in the sequence 1/3, 1/9,1/27,1/81....

netineya [11]

1/243

each second number is being multiplied by three

3*3=9

9*3=27

27*3=81

so 81*3=243

243 is the answer

3 0

3 years ago

Read 2 more answers

Find the volume of the triangular pyramid to the nearest whole number

Lelu [443]

Answer:

924

Step-by-step explanation:

Find the volume of the triangular pyramid to the nearest whole number. In this case its 924

8 0

3 years ago

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Determine the taxi distance from point C(2, 4) to point D(1, 7).

Readme [11.4K]

The distance is 3.16 (label whatever is appropriate)

6 0

4 years ago