Given that a die is rolled 360 times. Let say that you want to use normal approximation to find the probability that the number of 4 was rolled exactly 100 times.

Here we know that getting 4 is binomial with p = 1/6 and n =360

By approximating to normal after checking conditions are satisfied we have

X = no of fours obtained is normal

with mean = $np =60$

and variance = $npq = 50$

Std dev = 7.072

X is N(60, 7.072)

For finding out prob x=100 we have to do continuity correction as

$P(X=100) = P(99.5$

3 0

4 years ago

Please help me with this math

Montano1993 [528]

Answer:

um I don't understand it pls be more specific and I will help

8 0

2 years ago

Solve for x: Log4(x+8)=3

viktelen [127]

If $log_{4}(x+8)=3$
Then $4^3=x+8$
$64=x+8$
$64-8=x$
$56=x$

3 0

4 years ago

Use the grouping method to factor this polynomial.

IgorLugansk [536]

Answer:

Step-by-step explanation:

Given

x³ + 2x² + 7x + 14 ( factor the first/second and third/fourth terms )

= x²(x + 2) + 7(x + 2) ← factor out (x + 2) from each term

= (x² + 7)(x + 2) → D

5 0

3 years ago