To increase sales, an online clothing store began giving a 50% off coupon to random customers Six customers each made purchases from the website the binomial random variable and mean and standard deviation of X is mathematically given as

$X ~ Bin(n = 6, p = 0.2)$

x= 0.9798

<h3>What is a binomial random variable?</h3>

Generally, the equation for is mathematically given as

P(coupon) = 1/5

P(coupon)= 0.2

the binomial distribution

$X ~ Bin(n = 6, p = 0.2)$

Therefore, The mean and standard deviation of X

$пВ = np \\np= 6* 0.2 = 1.2\\$

$x=\sqrt{ np(1 - p)} \\ x=\sqrt{ 6 * 0.2 + (1 -0.2)} \\$

x= 0.9798

In conclusion, mean and standard deviation of X

x= 0.9798

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6 0

2 years ago

Can someone please help me? <br><br> -r/3 ≤ 6

lozanna [386]

The answer would be $r \geq 2$

7 0

4 years ago

How long would it take for a ball dropped from the top of a 484-foot building to hit the ground?

pochemuha

Answer:

First, convert the ft to standard units of meters.

1 foot = 0.3048 meters

Therefore,

484 ft = 147.5232 meters

Then, we will use the laws of motion to calculate the time:

x = 0.5 at^2

where:

x is the displacement

a is the gravity (9.8 m/sec^2)

t is the time taken

Substitute in the equation with the givens to calculate the time as follows:

147.5232 = (0.5 x 9.8) t^2

t^2 = 147.5232 / (0.5 x 9.8)

t^2 = 30.11 seconds

t = 5.49

HOPE THIS HELPED!!!!!!!XDD

LOVE, AZZY

4 0

3 years ago

Can a quadralateral have four obtuse sides

kicyunya [14]

Yeap. It sure is heck can bud. Honestly I'm just typing so I'm able to send this

8 0

3 years ago

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