ZuoTi.Pro
Question

If sigma is unknown, X is normal and n=5, then the sampling distribution of standardized X-bar...

If sigma is unknown, X is normal and n=5, then the sampling distribution of standardized X-bar is

  1. t (n-1)
  2. approximately Z
  3. unknown
  4. binomial
math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

solution

If sigma is unknown

the we use t distribution  

t (n-1) =t /2,n-1 = t /2,df

sampling distribution of standardized X-bar is

  1. t (n-1)
0 0
Add a comment
Know the answer?
Add Answer to:
If sigma is unknown, X is normal and n=5, then the sampling distribution of standardized X-bar...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • 1. If X is non-normal and n<30, then the sampling distribution of standardized X-bar is: t...

    1. If X is non-normal and n<30, then the sampling distribution of standardized X-bar is: t (n-1) approximately Z unknown binomial 2. A statistician wants to estimate the mean loss suffered by Delta pilots in the labor negotiations to lower Delta salaries to within $2500 with 95% confidence. From a first small survey, the standard deviation of the loss is estimated at $10,000. What size sample should the statistician select? 1206 44 7 None of the above 3. The difference...

  • The Central Limit Theorem says A) When n<30 , the sampling distribution of x¯¯¯ will be...

    The Central Limit Theorem says A) When n<30 , the sampling distribution of x¯¯¯ will be approximately a normal distribution. B) When n<30 , the original population will be approximately a normal distribution. C) When n>30 , the original population will be approximately a normal distribution. D) When n>30 , the sampling distribution of x¯¯¯ will be approximately a normal distribution.

  • Suppose x has a distribution with a mean of 40 and a standard deviation of 20....

    Suppose x has a distribution with a mean of 40 and a standard deviation of 20. Random samples of size n = 64 are drawn. (a) Describe the x bar distribution. x bar has a normal distribution. x bar has a geometric distribution. x bar has an approximately normal distribution. x bar has a Poisson distribution. x bar has an unknown distribution. x bar has a binomial distribution. Compute the mean and standard deviation of the distribution. (For each answer,...

  • List the appropriate sampling distribution for each sample statistic (a) x bar, n=100 (b) s2, n=30...

    List the appropriate sampling distribution for each sample statistic (a) x bar, n=100 (b) s2, n=30 (c) x bar, n=25

  • Which of the following statements about the sampling distribution of the sample mean, x-bar, is not...

    Which of the following statements about the sampling distribution of the sample mean, x-bar, is not true? The distribution is normal regardless of the shape of the population distribution, as long as the sample size,n, is large enough. The distribution is normal regardless of the sample size, as long as the population distribution is normal. The distribution's mean is the same as the population mean. The distribution's standard deviation is smaller than the population standard deviation. All of the above...

  • 1) Suppose you have a normal distribution with known mu = 11 and sigma = 6....

    1) Suppose you have a normal distribution with known mu = 11 and sigma = 6. N(11,6). Using the 68,95,99.7 rule, what is the approximate probability that a value drawn from this distribution will be: a. Between 5 and 17? b. Between -1 and 23? c. Greater than 16? d. Less than -1? e. Less than 23? 2) Suppose you have a normal distribution with known mu = 8 and sigma = 2. N(8,2). Compute the Z---score for: a. X...

  • Describe the sampling distribution of p. Assume the size of the population is 30,000. n 800,...

    Describe the sampling distribution of p. Assume the size of the population is 30,000. n 800, p 0.465 Describe the shape of the sampling distribution of p. Choose the correct answer below O A. The shape of the sampling distribution of p is approximately normal because n s 0.05N and np(1 -p)2 10 О с. OD. The shape of the sampling distribution of pis not normal because n s 0.05N and np(1-p)2 10. Determine the mean of the sampling distribution...

  • Describe the sampling distribution of p. Round to three decimal places when necessary. N = 24.000,...

    Describe the sampling distribution of p. Round to three decimal places when necessary. N = 24.000, n= 300, p=0.3 O A. Binomial; Hp = 90,0 = 7.937 OB. Approximately normal; Hp = 0.3, 0 = 0.026 O C. Approximately normal; H = 0.3, 0 = 0.094 OD. Exactly normal; Hp = 0.3, = 0.026

  • Describe the sampling distribution of p. Assume the size of the population is 20,000. n =...

    Describe the sampling distribution of p. Assume the size of the population is 20,000. n = 800, p = 0.525 Describe the shape of the sampling distribution of P. Choose the correct answer below. O A. The shape of the sampling distribution of p is approximately normal because ns 0.05N and np(1 -p) 10. OB. The shape of the sampling distribution of p is approximately normal because n s 0.05N and np(1-p) < 10. OC. The shape of the sampling...

  • For the following​ information, determine whether a normal sampling distribution can be​ used, where p is...

    For the following​ information, determine whether a normal sampling distribution can be​ used, where p is the population​ proportion, α is the level of​significance, p is the sample​ proportion, and n is the sample size. If it can be​ used, test the claim.​Claim: p≥0.28​; α=0.04. Sample​ statistics: p=0.20​, n=140 Let q=1−p and let q=1−p. A normal sampling distribution ▼ cannot can be used​ here, since ▼ npnp n ModifyingAbove p with caretnp ▼ less than< greater than or equals≥ 5...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT