can someone show the steps on
how to complete this problem thanks
Homework Answers
Add Answer to:
can someone show the steps on
how to complete this problem thanks
22. Suppose that for...
can someone show the steps to answering this. I know the answer is (A) but not...
can
someone show the steps to answering this. I know the answer is (A)
but not sure how to work it.
19. The random variable X has the following probability distribution: x Value of X | $0 3. f(x) Probability 0.4 0.6 5.4 Vhat is the variance and standard deviation for this random variable respectively? (A. 2.16, 1.47 B. 1.8, 1.34 C. 0.6, 0.77 D. 0.1, 0.01 . . Can't be calculated.
Need help on how to get the answer. Thanks Problem 9: Suppose random variable X follows...
Need help on how to get the answer. Thanks Problem 9: Suppose random variable X follows a normal distribution, with a mean of 3 and a standard deviation of 2. c) What is the approximate 85th percentile of X? answer：z = 1.04, so x = 3 + 2*1.04 = 5.08
answer a-f, clearly show the steps thanks 1. . The lifetimes of light bulbs produced by...
answer a-f, clearly show the steps thanks
1. . The lifetimes of light bulbs produced by a particular manufacturer have mean 1,200 hours and standard deviation 400 hours, The population distribution is normal. Suppose that you purchase 16 bulbs, which can be regarded as a random sample from the' manufacturer's output. a)What is the mean of the sample mean lifetime? Explain. bWhat is the standard error of the sample mean? Explain. c)What is the probability that, on average, these 16...
Fill in the blanks to correctly complete the sentence below. Suppose a simple random sample of size n is drawn from a l...
Fill in the blanks to correctly complete the sentence below. Suppose a simple random sample of size n is drawn from a large population with mean u and standard deviation o. The sampling distribution of x has mean u;= __ deviation = and standard Suppose a simple random sample of size n is drawn from a large population with mean u and standard deviation o. The sampling distribution of x has mean u; = | Vand standard deviation or
Please show steps (and formulas) for part b Problem 2. a. X has a normal distribution...
Please show steps (and formulas) for part b
Problem 2. a. X has a normal distribution with mean 5 and variance 25. Y has a normal distribution with mean 3 and variance 16. In addition, X and Y are independent. If W = X+Y, find P(W > 9). b. Random variables U, V, Z are such that E[U] = 1, E[V] =5, E[2] = -3, Var[U] = 1, Var[V] = 4, Var[2] =1, Cov[U,V] =-1,Cov[U, 2] = 2, Cor[V, 2]...
Problem 2 [17 points]. Transformations! a) (5 points) Suppose the time, W, it takes to complete...
Problem 2 [17 points]. Transformations! a) (5 points) Suppose the time, W, it takes to complete a technical task at a workshop has probability density function -w/2 f(w)y 0, 0, otherwise Using the appropriate transformation methods, find the density function for the a time it takes two workers to complete this technical task: S Wi + Ws b) (5 points) Derive the moment generating function of a standard normal randon variable. Use point form to explain each step in your...
Show steps, thanks ·Additional Problem 13. For random variables X and Y it is given that...
Show steps, thanks
·Additional Problem 13. For random variables X and Y it is given that Ox = 2, ơY = 5, and pxy 3 (a) Find Cov(Xx,y) (b) Var(4X-2Y7 Answers: (a) -. (b) 002 10652 li 3 . Additional Problem 14. Suppose Xi and X2 are independent random variables that have exponential distribution with β 4. (a) Find the covariance and correlation between 5Xi + 3X, and 7Xi-2X. (b) Find Var-5X2-2
Suppose that an accounting firm does a study to determine the time needed to complete one...
Suppose that an accounting firm does a study to determine the time needed to complete one person's tax forms. It randomly surveys 175 people. The sample mean is 23.8 hours. There is a known population standard deviation of 6.2 hours. The population distribution is assumed to be normal. Find the following: The sample mean x The population standard deviation σ The sample size n Let X be the time needed to complete one person's tax forms, and X the mean...
Can someone explain how Q3 is gotten? It is using the percentile formula! Thanks! . 10.7...
Can someone explain how Q3 is gotten? It is using the percentile
formula! Thanks!
. 10.7 8.3 8.0 4.5 6.9 8,5 minutes • Find the mean 7.8167 minutes Find the median 8.15 minutes Find the standard deviation 2.0439 minutes • What is the sample size? 6 Find the third quartile (Q3) 9.05 minutes
Use the following information to complete steps (a) through (d) below. A random sample of size...
Use the following information to complete steps (a) through (d) below. A random sample of size n 1 equals 31 results in a sample mean of 124.3 and a sample standard deviation of 8.5. An independent sample of size n 2 equals 50 results in a sample mean of 131.8 and sample standard deviation of 7.3. Does this constitute sufficient evidence to conclude that the population means differ at the alpha equals 0.005 level of significance? (c) Use technology(TI-84) to...
can
someone show the steps to answering this. I know the answer is (A)
but not sure how to work it.
19. The random variable X has the following probability distribution: x Value of X | $0 3. f(x) Probability 0.4 0.6 5.4 Vhat is the variance and standard deviation for this random variable respectively? (A. 2.16, 1.47 B. 1.8, 1.34 C. 0.6, 0.77 D. 0.1, 0.01 . . Can't be calculated.
answer a-f, clearly show the steps thanks
1. . The lifetimes of light bulbs produced by a particular manufacturer have mean 1,200 hours and standard deviation 400 hours, The population distribution is normal. Suppose that you purchase 16 bulbs, which can be regarded as a random sample from the' manufacturer's output. a)What is the mean of the sample mean lifetime? Explain. bWhat is the standard error of the sample mean? Explain. c)What is the probability that, on average, these 16...
Fill in the blanks to correctly complete the sentence below. Suppose a simple random sample of size n is drawn from a large population with mean u and standard deviation o. The sampling distribution of x has mean u;= __ deviation = and standard Suppose a simple random sample of size n is drawn from a large population with mean u and standard deviation o. The sampling distribution of x has mean u; = | Vand standard deviation or
Please show steps (and formulas) for part b
Problem 2. a. X has a normal distribution with mean 5 and variance 25. Y has a normal distribution with mean 3 and variance 16. In addition, X and Y are independent. If W = X+Y, find P(W > 9). b. Random variables U, V, Z are such that E[U] = 1, E[V] =5, E[2] = -3, Var[U] = 1, Var[V] = 4, Var[2] =1, Cov[U,V] =-1,Cov[U, 2] = 2, Cor[V, 2]...
Problem 2 [17 points]. Transformations! a) (5 points) Suppose the time, W, it takes to complete a technical task at a workshop has probability density function -w/2 f(w)y 0, 0, otherwise Using the appropriate transformation methods, find the density function for the a time it takes two workers to complete this technical task: S Wi + Ws b) (5 points) Derive the moment generating function of a standard normal randon variable. Use point form to explain each step in your...
Show steps, thanks
·Additional Problem 13. For random variables X and Y it is given that Ox = 2, ơY = 5, and pxy 3 (a) Find Cov(Xx,y) (b) Var(4X-2Y7 Answers: (a) -. (b) 002 10652 li 3 . Additional Problem 14. Suppose Xi and X2 are independent random variables that have exponential distribution with β 4. (a) Find the covariance and correlation between 5Xi + 3X, and 7Xi-2X. (b) Find Var-5X2-2
Can someone explain how Q3 is gotten? It is using the percentile
formula! Thanks!
. 10.7 8.3 8.0 4.5 6.9 8,5 minutes • Find the mean 7.8167 minutes Find the median 8.15 minutes Find the standard deviation 2.0439 minutes • What is the sample size? 6 Find the third quartile (Q3) 9.05 minutes
Most questions answered within 3 hours.
-
A 10.000 g sample of water contains 11.19% H by mass. what
should be the %H...
asked 38 seconds ago -
Consider an investment game among 2 players. Each player can
either invest,
i, or not invest,-i....
asked 1 minute from now -
The time taken to complete a particular task is normally
distributed with a standard deviation of...
asked 8 minutes ago -
we have heteroskedasticity in a regression when:
When the variance of error terms changes when an...
asked 17 minutes ago -
Explain some different types of fungi. State the different
divisions undergo by fungi.
asked 30 minutes ago -
The shortest time that 120 C can flow through a 20 A circuit
breaker without tripping...
asked 31 minutes ago -
A software design pattern is a general, reusable solution to a
commonly occurring problem, acting as...
asked 33 minutes ago -
The mean waiting time at the drive-through of a fast-food
restaurant from the time an order...
asked 50 minutes ago -
The pitch (p) of a helix is defined as p = dn, in which n is...
asked 52 minutes ago -
Do you agree that the declining stock of social capital is the
blame for the failure...
asked 55 minutes ago -
A researcher is interested in whether coffee consumption helps
with performance on reading comprehension tasks. The...
asked 1 hour ago -
it has been estimated since the beginning of the human race that
about 133 metric ton...
asked 1 hour ago