Question

Use the appropriate normal distribution to approximate the resulting binomial distributions. A convenience store owner claims that 55% of the people buying from her store, on a certain day of the week, buy coffee during their visit. A random sample of 35 customers is made. If the store owner's claim is correct, what is the probability that fewer than 20 customers in the sample buy coffee during their visit on that certain day of the week?

a) 0.4681

b) 0.6293

c) 0.5319

d) 0.5675

e) 0.5987

f) None of the above.

Answer #1

Solution :

Using binomial distribution,

= n * p = 35 * 0.55 = 19.25

= n * p * q = 35 * 0.55 * 0.45 = 2.9432

Using continuity correction ,

= P((x - ) / < (19.5 - 19.25) / 2.9432)

= P(z < 0.08)

= 0.5319

Probability = **0.5319**

**c)**

Use the appropriate normal distribution to approximate the
resulting binomial distributions. A convenience store owner claims
that 55% of the people buying from her store, on a certain day of
the week, buy coffee during their visit. A random sample of 35
customers is made. If the store owner's claim is correct, what is
the probability that fewer than 20 customers in the sample buy
coffee during their visit on that certain day of the week?
a) 0.5675
b) 0.5319...

Use the appropriate normal distribution to approximate the
resulting binomial distributions. A convenience store owner claims
that 55% of the people buying from her store, on a certain day of
the week, buy coffee during their visit. A random sample of 35
customers is made. If the store owner's claim is correct, what is
the probability that fewer than 22 customers in the sample buy
coffee during their visit on that certain day of the week?
a) 0.7967
b) 0.7764...

Use the appropriate normal distribution to approximate the
resulting binomial distribution.
A marksman's chance of hitting a target with each of his shots
is 65%. (Assume the shots are independent of each other.) If he
fires 40 shots, what is the probability of his hitting the target
in each of the following situations? (Round your answers to four
decimal places.)
(a) at least 29 times
(b) fewer than 21 times
(c) between 23 and 29 times, inclusive
You may need...

What role could the governance of ethics have played
if it had been in existence in the organization? Assess the
leadership of Enron from an ethical perspective.
THE FALL OF ENRON: A STAKEHOLDER FAILURE
Once upon a time, there was a gleaming headquarters
office tower in Houston, with a giant tilted "£"' in front, slowly
revolving in the Texas sun. The Enron Corporation, which once
ranked among the top Fortune 500 companies, collapsed in 2001 under
a mountain of debt...

Discuss ethical issues that can be identified in this
case and the mode of managing ethics Enron finds itself in this
case. How would you describe the ethical culture and levels of
trust at Enron? Provide reasons for your assessment.
THE FALL OF ENRON: A STAKEHOLDER FAILURE
Once upon a time, there was a gleaming headquarters
office tower in Houston, with a giant tilted "£"' in front, slowly
revolving in the Texas sun. The Enron Corporation, which once
ranked among...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 4 minutes ago

asked 5 minutes ago

asked 17 minutes ago

asked 40 minutes ago

asked 42 minutes ago

asked 49 minutes ago

asked 50 minutes ago

asked 55 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago