Homework Answers
Q5. It's a binomial distribution with n = 4 and p = 0.60
We solve first 4 questions as per Chegg Rule.
Add Answer to:
pt 1 Information A survey of people who own smartphones found that 35% of people check...
Smartphones: A poll agency reports that 48% of teenagers aged 12-17 own smartphones. A random sample...
Smartphones: A poll agency reports that 48% of teenagers aged 12-17 own smartphones. A random sample of 150 teenagers is drawn. Round your answers to at least four decimal places as needed. Part 1 of 6 (3) Find the meant The mean is 0.48 Part 2 of 6 (b) Find the standard deviation or The standard deviation GA is 0.0408 Part 3 of 6 (c) Find the probability that more than 50% of the sampled teenagers own a smartphone. The...
A recent article in Business insider shows that 35% of the world wide smartphone markeyt is...
A recent article in Business insider shows that 35% of the world wide smartphone markeyt is held by Apple. Suppose a randdom and independet sample of 240 people is selected. a) If X is the number of people in the sample who own an Apple smartphone, can we assume a binomial distribution for X? Explain. b) Use normal distribution (as an approximation to binomial) to calculate probability that less than 100 of them own an Apple smartphone.
CO 1) A survey of 385 people who like wild sweaters found that 74% had a...
CO 1) A survey of 385 people who like wild sweaters found that 74% had a wild holiday sweater. What is the population and what is the sample?
A. B. C. D. 3 of 11 (9 complete) HW Score: 63.64%, 7 of 11 pts...
A.
B.
C.
D.
3 of 11 (9 complete) HW Score: 63.64%, 7 of 11 pts Score: 0 of 1 pt X 6.6.9-T Question Help Use a normal approximation to find the probability of the indicated number of voters. In this case, assume that 188 eligible voters aged 18-24 are randomly selected. Suppose a previous study showed that among eligible voters aged 18-24.22% of them voted. Probability that fewer than 45 voted The probability that fewer than 45 of 188...
Suppose that insurance companies did a survey. They randomly surveyed 410 drivers and found that ...
Suppose that insurance companies did a survey. They randomly
surveyed 410 drivers and found that 300 claimed they always buckle
up. We are interested in the population proportion of drivers who
claim they always buckle up.
NOTE: If you are using a Student's t-distribution, you may
assume that the underlying population is normally distributed. (In
general, you must first prove that assumption, though.)
Part (a)
(i) Enter an exact number as an integer, fraction, or decimal.
x =
(ii) Enter...
According to a consumer survey of young adults (18-24 years of age) who shop online, 29%...
According to a consumer survey of young adults (18-24 years of age) who shop online, 29% own a mobile phone with internet access. In a random sample of 400 young adults who shop online, let x be the number who own a mobile phone with internet access. a. Explain why x is a binomial random variable (to a reasonable degree of approximation). Choose the correct explanation below. A. The experiment consists of n identical, dependent trials, with more than two...
According to a consumer survey of young adults (18-24 years of age) who shop online, 30%...
According to a consumer survey of young adults (18-24 years of age) who shop online, 30% own a mobile phone with internet access. In a random sample of 400 young adults who shoponline, let x be the number who own a mobile phone with internet access. a. Explain why x is a binomial random variable (to a reasonable degree of approximation). Choose the correct explanation below. A. The experiment consists of n identical, dependent trials, where there are only two...
2. (11 pt) A survey found that 16% of U.S. consumers used the Internet to buy...
2. (11 pt) A survey found that 16% of U.S. consumers used the Internet to buy gifts during the 1999 holiday season. Assume that this percentage was based on a sample of 1285 people. (Make sure to show all work.) a. Using 99% confidence, what is the margin of error associated with the estimated proportion of people who bought gifts using the Internet? bought gifts using the Internet? error is 1%? b. What is the 99%confidence interval for the population...
ly 80% of adult who own a computer claim to have a firewall that In a...
ly 80% of adult who own a computer claim to have a firewall that In a press release installed on their computer to prevent 400 computers, only about 40% actually had a firewall installed. (a) Suppose that the true proportion of computer owners hackers from stealing personal information. This estimate was based on a survey of 3000 people. It was also reported that in a study of who have a firewall installed is 0.80. If 20 computer owners are selected...
According to a survey in a country, 35% of adults do not own a credit card....
According to a survey in a country, 35% of adults do not own a credit card. Suppose a simple random sample of 200 adults is obtained Complete parts (a) through (d) below. (a) Describe the sampling distribution of the sample proportion of adults who do not own a credit card. Choose the phrase that best describes the shape of the sampling distribution of below. O A. Approximately normal because ns 0.05N and np(1-P)< 10 OB. Not normal because ns0.05N and...
Smartphones: A poll agency reports that 48% of teenagers aged 12-17 own smartphones. A random sample of 150 teenagers is drawn. Round your answers to at least four decimal places as needed. Part 1 of 6 (3) Find the meant The mean is 0.48 Part 2 of 6 (b) Find the standard deviation or The standard deviation GA is 0.0408 Part 3 of 6 (c) Find the probability that more than 50% of the sampled teenagers own a smartphone. The...
A.
B.
C.
D.
3 of 11 (9 complete) HW Score: 63.64%, 7 of 11 pts Score: 0 of 1 pt X 6.6.9-T Question Help Use a normal approximation to find the probability of the indicated number of voters. In this case, assume that 188 eligible voters aged 18-24 are randomly selected. Suppose a previous study showed that among eligible voters aged 18-24.22% of them voted. Probability that fewer than 45 voted The probability that fewer than 45 of 188...
Suppose that insurance companies did a survey. They randomly
surveyed 410 drivers and found that 300 claimed they always buckle
up. We are interested in the population proportion of drivers who
claim they always buckle up.
NOTE: If you are using a Student's t-distribution, you may
assume that the underlying population is normally distributed. (In
general, you must first prove that assumption, though.)
Part (a)
(i) Enter an exact number as an integer, fraction, or decimal.
x =
(ii) Enter...
2. (11 pt) A survey found that 16% of U.S. consumers used the Internet to buy gifts during the 1999 holiday season. Assume that this percentage was based on a sample of 1285 people. (Make sure to show all work.) a. Using 99% confidence, what is the margin of error associated with the estimated proportion of people who bought gifts using the Internet? bought gifts using the Internet? error is 1%? b. What is the 99%confidence interval for the population...
ly 80% of adult who own a computer claim to have a firewall that In a press release installed on their computer to prevent 400 computers, only about 40% actually had a firewall installed. (a) Suppose that the true proportion of computer owners hackers from stealing personal information. This estimate was based on a survey of 3000 people. It was also reported that in a study of who have a firewall installed is 0.80. If 20 computer owners are selected...
According to a survey in a country, 35% of adults do not own a credit card. Suppose a simple random sample of 200 adults is obtained Complete parts (a) through (d) below. (a) Describe the sampling distribution of the sample proportion of adults who do not own a credit card. Choose the phrase that best describes the shape of the sampling distribution of below. O A. Approximately normal because ns 0.05N and np(1-P)< 10 OB. Not normal because ns0.05N and...
Most questions answered within 3 hours.
-
What are the effects of IMC-based PID controller and
Zeigler-Nicholas parameters on the specifications of a...
asked 8 seconds from now -
1. Explain the tem (10) Key Success Factors in Contemporary
Selling
asked 13 minutes ago -
It's absolutely linked, the effectiveness of the CP Coordinator
and the success of the business impact...
asked 22 minutes ago -
where does leadership reside in belief theory
asked 22 minutes ago -
Jane wants to purchase a bond with a face value of $8,595 and a
bond rate...
asked 24 minutes ago -
A bolt manufacturer wants to investigate the machine that
produces bolts with a diameter of 0.28...
asked 26 minutes ago -
DP Gumby produces sleeveless sweaters. He can separate the
demand function into a domestic component: QD=...
asked 49 minutes ago -
6) Weak acids are not very soluble in water. A). TRUE B).
FALSE
The answer says...
asked 55 minutes ago -
Lab #2 Address Book Unsorted List (C++)
Using classes, design an online address book to keep...
asked 1 hour ago -
Tucson Machinery, Inc., manufactures numerically controlled
machines, which sell for an average price of $0.5 million...
asked 1 hour ago -
Review the referenced paper by Melse (2008). Describe the
research question being addressed. Discuss the methods...
asked 1 hour ago -
Please do all parts. I don't want to hear your as per guidelines
stuff. Do if...
asked 1 hour ago