Homework Answers
Ans. A. 1/625
This is because if one in 5 owns their own car. We can say that each student has an independent probability of 1/5 to own their car
Probability that all four own their car = product.of probabilities of each one of them to own their car= ( 1/5)x (1/5)x (1/5) x (1/5) = 1/625.
Add Answer to:
QUESTION 16 Suppose 1 in 5 (1/5) JWU students own their own car. If four students...
QUESTION 17 Suppose 1 in 5 JwU students own their own car. If four students are...
QUESTION 17 Suppose 1 in 5 JwU students own their own car. If four students are randomly selected, what is the probability that none own their car? (Hint: think multiplication rule, selecting 4 individual students. in 5 is the same as 20%, right?) O A. 19/20 O B. 624/625 O c. 256,625 O D. 16/20 QUESTION 18 Which of the following variables is NOT discrete? O A the number of Oscar nominations Meryl Streep has received O B. the number...
QUESTION 15 When I get my tax refund this year, there's a 30% chance l will...
QUESTION 15 When I get my tax refund this year, there's a 30% chance l will buy a wide screen TV a 20% chance I will buy a blue ray player, and a 10% chance I will buy both. What's the chance will buy neither and hit Foxwoods instead? (Hint: Complement of PCTV or Blue Ray)) OA.9496 OB, 4096 О с. 60% on 99.4% QUESTION 16 Suppose 1 in 5 (1/5) JwU students own their own car. If four students...
Confidence Intervals: A group of 50 randomly selected JWU students have a mean age of 20.5...
Confidence Intervals: A group of 50 randomly selected JWU students have a mean age of 20.5 years. Assume the population standard deviation is 1.5 years. Construct a 99% confidence interval for the JWU population mean age. State your answer. (Zc 2.57) 1. 2. Construct a 90% confidence interval for the population mean, . Assume the population has a 2 normal distribution. A random sample of 20 JWU college students has mean annual earnings of 0 $3310 with a standard deviation...
Suppose that 30% of all college students smoke cigarettes. A sample of 16 is selected randomly....
Suppose that 30% of all college students smoke cigarettes. A sample of 16 is selected randomly. . What is the probability that between 5 and 8 (both inclusive) students smoke? Round your answer to four decimal places.
5. In a math class consisting of 21 students, suppose that 10 of the enrolled students...
5. In a math class consisting of 21 students, suppose that 10 of the enrolled students are rated as “very proficient" in math, according to a standardized test. (a) (4 points) Suppose 4 students in the class are randomly selected to form a group and work on a project. What is the probability that all of the students in the group are rated as very proficient in math? (b) (4 points) If 4 students in the class are randomly selected,...
D Question 4 1 pts It has been found that 72% of college students own a...
D Question 4 1 pts It has been found that 72% of college students own a car. If 40 students are selected at random, what is the variance for the number of them who own their car? 3.347 O 11.2 2.840 28.8 8.064 5.367
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone,...
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone, 50% an Android smartphone and 5% some other type of phone. Let X=the number of students in a simple random sample of 15 students who own an iPhone. A. What is the probability distribution of X? Note: If this is a well-known distribution it is sufficient to name the distribution and identify the value of the parameters B. Find the probability that 8 students...
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone,...
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone, 50% an Android smartphone and 5% some other type of phone. Let X= the number of students in a simple random sample of 15 students who own an iPhone. A. What is the probability distribution of X? Note: If this is a well-known distribution it is sufficient to name the distribution and identify the value of the parameters. B. Find the probability that 8...
Question 4 4) When 328 college students are randomly selected and surveyed, it is found that...
Question 4 4) When 328 college students are randomly selected and surveyed, it is found that 122 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car. O 0.303 <p<0.441 O 0.320 < p < 0.424 O 0.328 <p<0.416 O 0.310 < p <0.434 Question 5 Assume that the population has a normal distribution. 51 A sociologict doulonc a tort to moncuro dar tovarde public
4* When 308 college students are randomly selected and surveyed, it is found that 129 own...
4* When 308 college students are randomly selected and surveyed, it is found that 129 own a car. Find a 95% confidence interval for the true proportion of all college students who own a car. O 0.363 <p <0.473 O 0.310 < p < 0.434 30.364 < p < 0.474 0.362 < p < 0.474
QUESTION 17 Suppose 1 in 5 JwU students own their own car. If four students are randomly selected, what is the probability that none own their car? (Hint: think multiplication rule, selecting 4 individual students. in 5 is the same as 20%, right?) O A. 19/20 O B. 624/625 O c. 256,625 O D. 16/20 QUESTION 18 Which of the following variables is NOT discrete? O A the number of Oscar nominations Meryl Streep has received O B. the number...
QUESTION 15 When I get my tax refund this year, there's a 30% chance l will buy a wide screen TV a 20% chance I will buy a blue ray player, and a 10% chance I will buy both. What's the chance will buy neither and hit Foxwoods instead? (Hint: Complement of PCTV or Blue Ray)) OA.9496 OB, 4096 О с. 60% on 99.4% QUESTION 16 Suppose 1 in 5 (1/5) JwU students own their own car. If four students...
Confidence Intervals: A group of 50 randomly selected JWU students have a mean age of 20.5 years. Assume the population standard deviation is 1.5 years. Construct a 99% confidence interval for the JWU population mean age. State your answer. (Zc 2.57) 1. 2. Construct a 90% confidence interval for the population mean, . Assume the population has a 2 normal distribution. A random sample of 20 JWU college students has mean annual earnings of 0 $3310 with a standard deviation...
5. In a math class consisting of 21 students, suppose that 10 of the enrolled students are rated as “very proficient" in math, according to a standardized test. (a) (4 points) Suppose 4 students in the class are randomly selected to form a group and work on a project. What is the probability that all of the students in the group are rated as very proficient in math? (b) (4 points) If 4 students in the class are randomly selected,...
D Question 4 1 pts It has been found that 72% of college students own a car. If 40 students are selected at random, what is the variance for the number of them who own their car? 3.347 O 11.2 2.840 28.8 8.064 5.367
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone, 50% an Android smartphone and 5% some other type of phone. Let X=the number of students in a simple random sample of 15 students who own an iPhone. A. What is the probability distribution of X? Note: If this is a well-known distribution it is sufficient to name the distribution and identify the value of the parameters B. Find the probability that 8 students...
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone, 50% an Android smartphone and 5% some other type of phone. Let X= the number of students in a simple random sample of 15 students who own an iPhone. A. What is the probability distribution of X? Note: If this is a well-known distribution it is sufficient to name the distribution and identify the value of the parameters. B. Find the probability that 8...
Question 4 4) When 328 college students are randomly selected and surveyed, it is found that 122 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car. O 0.303 <p<0.441 O 0.320 < p < 0.424 O 0.328 <p<0.416 O 0.310 < p <0.434 Question 5 Assume that the population has a normal distribution. 51 A sociologict doulonc a tort to moncuro dar tovarde public
4* When 308 college students are randomly selected and surveyed, it is found that 129 own a car. Find a 95% confidence interval for the true proportion of all college students who own a car. O 0.363 <p <0.473 O 0.310 < p < 0.434 30.364 < p < 0.474 0.362 < p < 0.474
Most questions answered within 3 hours.
-
A. Suppose your manager indicates that for a normally
distributed data set you are analyzing, your...
asked 19 minutes ago -
During the month of August, the average temperature of a lake
next to a local college...
asked 1 minute ago -
Which of these four researchers is most likely to have made Type
1 error
Kim who...
asked 14 minutes ago -
In a performance test, each of two cars takes 8.9 s to
accelerate from rest to...
asked 15 minutes ago -
Sapphire Aerospace operates 52 weeks per year, and its cost of
goods sold last year was...
asked 19 minutes ago -
Create ER Model
Assets are resources that are used in CMS to display content.
Each asset...
asked 14 minutes ago -
For each the following molecules draw the best possible
structure based on formal charges for each...
asked 20 minutes ago -
A proton moves in the plane of this paper toward the top of the
page. A...
asked 29 minutes ago -
different divisions differing lines of business use
different costs of capital because their cost of equity...
asked 25 minutes ago -
Give an algorithm to determine whether or not the elements
of
an array of integers are...
asked 32 minutes ago -
. Gravimetric analysis. The gravimetric analysis that we will
perform in lab occurs according to the...
asked 51 minutes ago -
Learning curve problem:
A company was ordered to make 6 custom made parts. the labor
costs...
asked 48 minutes ago