In how many ways can a set of five letters be selected from the english alphabet

Mathematics

1 answer:

luda_lava [24]3 years ago

3 0

Without replacement 26*25*24*23*22

with replacement 26^5

You might be interested in

Does the graph of the equation y = 7 - 2x increase or decrease? A) decreases because the x values decrease from left to right B)

Nutka1998 [239]

Y=mx+b
m=slope=rise/run
if slope>0, then it increases
if slope<0, then decreases because it is going down

y=7-2x
y=-2x+7
-2<0
decreasing
because the y values decrease from left to right
the x values always increase if you go from left to right

B is the answer

7 0

3 years ago

Read 2 more answers

The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past

galina1969 [7]

Complete Question

The complete question is shown on the uploaded image

Answer:

1 ) The correct option B

2) The correct option is C

3) The correct option is C

4) The correct option is C

Step-by-step explanation:

From the question we are told that

The proportion that own a cell phone is $p = 0.90$

The sample size is n = 15

Generally the appropriate distribution for X is mathematically represented as

$X \ is \ B( n , p )$

$X \ is \ B( 15 , 0.90 )$

Generally the number students that own a cell phone in a simple random sample of 15 students is mathematically represented as

$\mu = n * p$

$\mu = 15 * 0.90$

$\mu = 13.5$

Generally the standard deviation of the number of students who own a cell phone in a simple random sample of 15 students is mathematically represented as

$\sigma = \sqrt{ n * p * q }$