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PAGE 1 I. It is reported th at 77% of workers aged 16 and over drive...
Data on the unemployment rate for workers aged 16–19 and for workers aged 20 and over...
Data on the unemployment rate for workers aged 16–19 and for workers aged 20 and over is listed in the table below. How do they differ? Unemployment rate (percent) Both sexes, 16–19 years 13.9 Men, 20 years and over 3.9 Women, 20 years and over 3.6 Source: The Bureau of Labor Statistics (www.bls.gov), January 2018. Workers aged 16–19 have unemployment rates that are (Click to select) the same as higher than lower than adult (above 20) unemployment rates. The reason for this is younger workers...
Multi-part question: U.S. Census data indicates that 72.9% of workers drove to work alone in 2016....
Multi-part question: U.S. Census data indicates that 72.9% of workers drove to work alone in 2016. Answer the following questions based on a random sample of 18 U.S. workers. a. What is the probability that 7 workers drove to work alone? b. What is the probability that more than 11 workers drove to work alone? b. What is the probability that less than 8 workers drove to work alone? d. What is the mean and standard deviation for this distribution?
In a certain company, 40 workers work. It is known that 8 of them are illegal....
In a certain company, 40 workers work. It is known that 8 of them are illegal. If the labor department does random inspection of 5 workers. What is the probability that the labor department finds at least one illegal worker? What is the probability that I will find more than one illegal worker?
Coronary bypass surgery: A healthcare research agency reported that 68% of people who had coronary bypass...
Coronary bypass surgery: A healthcare research agency reported that 68% of people who had coronary bypass surgery in 2008 were over the age of 65. Fifteen coronary bypass patients are sampled. Round the answers to four decimal places. Part 1 of 4 (a) What is the probability that exactly 10 of them are over the age of 65? The probability that exactly 10 of them are over the age of 65 is Part 2 of 4 (b) What is the...
Part 3 Smartphones: A poll agency reports that 47% of teenagers aged 12-17 own smartphones. A...
Part 3
Smartphones: A poll agency reports that 47% of teenagers aged 12-17 own smartphones. A random sample of 147 teenagers is drawn. Round your answers to at least four decimal places as needed. Part 1 of 6 (a) Find the mean pa. The mean ula is 0.47 Part 2 of 6 (b) Find the standard deviation on. The standard deviation A is 0.0412 Part: 2/6 Part 3 of 6 (c) Find the probability that more than 50% of the...
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...
The average score on an exam was reported as 61% with a standard deviation of 16%....
The average score on an exam was reported as 61% with a standard deviation of 16%. You may assume exam scores are normally distributed. If I select 10 people at random, what is the probability that the average of their scores would be … (A) …more than 50%? (B) …between 70% and 85%?
A poll reported that 70% of adults were satisfied with the job the major airlines were doing. Suppose 11 adults are sel...
A poll reported that 70% of adults were satisfied with the job
the major airlines were doing. Suppose 11 adults are selected at
random and the number who are satisfied is recorded.
a) explain why this is a binomial experiment (refer to
image)
b) find the probability that exactly 4 are satisfied with the
airlines
c) find the probability that fewer than 4 are satisfied with the
airlines
d) find the probability that 6 or more are satisfied with the...
1. A factory employs several thousand workers, of whom 30% are Hispanic. If the 15 members...
1. A factory employs several thousand workers, of whom 30% are Hispanic. If the 15 members of the union executive committee were chosen from the workers at random, the number of Hispanics on the committee would have the binomial distribution with n = 15 and p = 0.3. Verify the situation is indeed a Binomial experiment. You could assume that there are more than 1,500 workers employed in the factory (Hint: check the four conditions) [2] What is the probability...
The amount of time that a drive-through bank teller spends on a customer is a random...
The amount of time that a drive-through bank teller spends on a customer is a random variable with a mean u = 7.9 minutes and a standard deviation o = 3.6 minutes. If a random sample of 81 customers is observed, find the probability that their mean time at the teller's window is (a) at most 7.3 minutes; (b) more than 8.7 minutes; (c) at least 7.9 minutes but less than 8.3 minutes. Click here to view page 1 of...
Coronary bypass surgery: A healthcare research agency reported that 68% of people who had coronary bypass surgery in 2008 were over the age of 65. Fifteen coronary bypass patients are sampled. Round the answers to four decimal places. Part 1 of 4 (a) What is the probability that exactly 10 of them are over the age of 65? The probability that exactly 10 of them are over the age of 65 is Part 2 of 4 (b) What is the...
Part 3
Smartphones: A poll agency reports that 47% of teenagers aged 12-17 own smartphones. A random sample of 147 teenagers is drawn. Round your answers to at least four decimal places as needed. Part 1 of 6 (a) Find the mean pa. The mean ula is 0.47 Part 2 of 6 (b) Find the standard deviation on. The standard deviation A is 0.0412 Part: 2/6 Part 3 of 6 (c) Find the probability that more than 50% of the...
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 poll reported that 70% of adults were satisfied with the job
the major airlines were doing. Suppose 11 adults are selected at
random and the number who are satisfied is recorded.
a) explain why this is a binomial experiment (refer to
image)
b) find the probability that exactly 4 are satisfied with the
airlines
c) find the probability that fewer than 4 are satisfied with the
airlines
d) find the probability that 6 or more are satisfied with the...
The amount of time that a drive-through bank teller spends on a customer is a random variable with a mean u = 7.9 minutes and a standard deviation o = 3.6 minutes. If a random sample of 81 customers is observed, find the probability that their mean time at the teller's window is (a) at most 7.3 minutes; (b) more than 8.7 minutes; (c) at least 7.9 minutes but less than 8.3 minutes. Click here to view page 1 of...
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