Question

Decide whether you can use the normal distribution to approximate the binomials distribution. If you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs. If you cannot, explain why and use the binomial distribution to find the indicated probabilities.

A surgery of adults found that 74% of those who text on cell phones receive spam or unwanted messages. You randomly select 100 adults who text on cell phones. Complete parts (a) through (d).

Determine whether a normal distribution can be used to approximate the binomial distribution.

(a) Find the probability that the number of people who receive spam or unwanted messages is exactly 76.

Answer #1

**Refer Z-table to find the probability or use excel
formula "=NORM.S.DIST(0.57, TRUE)" & "=NORM.S.DIST(0.34, TRUE)"
to find the probability.**

**The probability that the number of people who receive
spam or unwanted messages is exactly 76 is
**

Decide whether you can use the normal distribution to
approximate the binomial distribution. If you can, use the normal
distribution to approximate the indicated probabilities and sketch
their graphs. If you cannot, explain why and use the binomial
distribution to find the indicated probabilities.
A survey of adults found that 56% of those who text on cell
phones receive spam or unwanted messages. You randomly select 100
adults who text on cell phones.
a-Find the probability that the number of...

Decide whether you can use the normal distribution to
approximate the binomial distribution. If you can, use the normal
distribution to approximate the indicated probabilities and sketch
their graphs. If you cannot, explain why and use the binomial
distribution to find the indicated probabilities. A survey of
adults found that 79% of those who text on cell phones receive
spam or unwanted messages. You randomly select 100 adults who text
on cell phones. Complete parts (a) through (d).
Determine whether...

A binomial experiment is given. Decide whether you can use the
normal distribution to approximate the binomial distribution. If
you can, find the mean and standard deviation. If you cannot,
explain why. A survey of adults found that 41 % have used a
multivitamin in the past 12 months. You randomly select 40 adults
and ask them if they have used a multivitamin in the past 12
months.

A survey of adults found that 56% of those who text on a cell
phone receive unwanted spam and messages. You randomly pick 100
adults who text on a cell phone. Find the probability that the
number of people who received spam and unwanted messages is exactly
60.

A binomial experiment is given. Decide whether you can use the
normal distribution to approximate the binomial distribution. If
you can, find the mean and standard deviation. If you cannot,
explain why.
A survey found that 83% of parents of teenagers have taken their
teenager's cell phone or Internet privileges away as a punishment.
You randomly select 19 parents of teenagers and ask them whether
they have taken their teenager's cell phone or Internet privileges
away as a punishment.
Select...

How do you know what functions to use on your calculator when
looking at study problems? For example:
A nationwide study indicated that 80% of college students with
cell phones send and receive
text messages with cell phones. A simple random sample of n = 200
college students with cell phones is
obtained.
(a) Describe the sampling distribution of ˆp, the sample proportion
of college students with cell phones
who send or receive text messages with their cell phones. [Hint:...

np, nq formula
A) Explain when you can use normal distribution to approximate
the binomial distribution
B) If we already know the binomial probability distribution
formula, why do we need to know this one?
C)When is it useful to approximate the binomial distribution as
normal. Provide 1 example

Compute P(X) using the binomial probability formula. Then
determine whether the normal distribution can be used to estimate
this probability. If so, approximate P(X) using the normal
distribution and compare the result with the exact probability.n
equals 54. p equals 0.7. X equals 46. Use the binomial probability
formula to find P(X).
Can the normal distribution be used to approximate this
probability?
Approximate P(X) using the normal distribution. Use a standard
normal distribution table.
By how much do the exact...

Compute P(X) using the binomial probability formula. Then
determine whether the normal distribution can be used to estimate
this probability. If so, approximate P(X) using the normal
distribution and compare the result with the exact probability.
n=50, p=0.50, and x=17 For n=50, p=0.5, and X=17, use the
binomial probability formula to find P(X).
Q: By how much do the exact and approximated probabilities
differ?
A. ____(Round to four decimal places as needed.)
B. The normal distribution cannot be used.

Explain how to decide when a normal distribution can be used to
approximate a binomial distribution.
Choose the correct answer below.
A.
If
npgreater than or equals?5
and
nqgreater than or equals??5,
the normal distribution can be used.
B.
If
npnot equals?5
and
nqnot equals??5,
the normal distribution can be used.
C.
If
npless than<5
and
nqless than<?5,
the normal distribution can be used.
D.
If
npgreater than>0
and
nqgreater than>?0,
the normal distribution can be used.

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