Someone help please!

Suppose that a recent poll found that 40% of adults in a certain country believe that the overall state of moral values is poor.

shusha [124]

Answer:

Step-by-step explanation:

Let X be the no of adults whose feelings the state of morals is poor.

X has two outcomes and each trial is independent of the other

X is Bin with p = probability for success in each trial =40%=0.40

n=no of adults surveyed = 55

a) The probability that exactly 21 of those surveyed feel the state of morals is poor is

$P(X=21) = 40C21 (0.4)^{21} (1-0.4)^{19} \\=0.03519$

(b) The probability that no more than 22 of those surveyed feel that state of morals is poor is

= $P(X$

(c) The probability that more than22 of those surveyed feel the state of morals is poor is

$P(X>22)\\=1-0.9811\\=0.0119$

(d) The probability that 15 or 16 believe the state of morals is poor is

= $P(X=15)+P(X=16)\\=0.1228+0.1279\\=0.2507$

4 0

4 years ago

6y + 3y. Plssssssssssssssssss help me

Airida [17]

This is very simple math let me show you:

Add similar elements:

6y + 3y = 9y

Your Answer Is 9y

plz mark me as brainliest :)

7 0

3 years ago

Read 2 more answers

the sum of three reciprocals of three consecutive integers is 1/21. write an equation that can be used to find the three integer

zysi [14]

I wish I was good at answering stuff

8 0

3 years ago

you are going in vacation you want to visit 4 different places in 2 weeks and you don't care what order in which you visit them.

ankoles [38]

Answer:

no it's not possible

Step-by-step explanation:

because the bases of an exponential function and its equivalent logarithmic function are equal

7 0

2 years ago

Explain how to write a function rule from the table below. Then write a function rule.

Brut [27]

To find the slope you do y1-y2/x1-x2

To find the y intercept you look at when x is zero what is y.

Equation is y=-1/2x -2

4 0

3 years ago

Read 2 more answers