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3 years ago

Find the standard deviation, _, for the binomial distribution which has the stated values of n and p. n=38; p=2/5

Mathematics

1 answer:

NARA [144]3 years ago

5 0

Answer:

Solution: given that

n = 38

p = 2/5 = 0.4 q = 1-p = 1-0.4 = 0.6

standard deviation = sqrt(n*p*q)

sqrt(38*0.4*0.6) = 3.0199

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2. The number of nickels that Christine has is

aev [14]

Answer:

The number of nickels is 15

The number of Dimes is 3

Step-by-step explanation:

Let the number of dimes Christine has be d

The number of nickels with christine be n

Then the number of Nickels Christine has will be

n = 5d ----------------------------------(1)

Now The total value of both dimes and nickels is = $1.05

This can be represented as

5n +10d = 105 (in cents)

From eq(1)

5(5d) + 10d = 105

25d+10d = 105

35d = 105

$d = \frac{105}{35}$

d = 3----------------------------------(2)

Substituting (2) in (1), we get

n = 5(3)

n = 15

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3 years ago

What angle do minute and hour hands of clock make at 9:00

Arte-miy333 [17]

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4 years ago

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Which number has 3 significant figures? A. 15.233 B. 153.2 C. 5.24399 D. 57.2

JulijaS [17]

Answer:

b because it is

Step-by-step explanation:

153.2 is a cool number

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2 years ago

Please answer thanks

mamaluj [8]

Answer:

Step-by-step explanation:

$V= ?\\r = 2\\h = 5\\\pi = 3.14\\\\V = \frac{1}{3} \pi*r^{2} *h\\\\V = \frac{1}{3} *3.14*2^{2} *5\\\\V= \frac{1}{3} *12.56*5\\\\V= \frac{1}{3}* 62.8\\\\V = 20.93333333\\\\\\V = 20.93$

In terms of pi

$V= ?\\r = 2\\h = 5\\V = \frac{1}{3} \pi*r^{2} *h\\\\V= \frac{1}{3} *\pi*2^{2} *5\\\\V = \frac{1}{3} \pi*20\\V= 6.67\pi\\$

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3 years ago

What is the answer of 2/3 time 1

Marina86 [1]

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3 years ago

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