Question

1. Assuming a normally distributed population with known σ, determine the significance level for each of...

1. Assuming a normally distributed population with known σ, determine the significance level for each of the following situations:

H1: μ > x, critical region Z > 1.88

H1: μ ≠ x, critical region Z > 2.88 or Z < -2.88

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
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
Similar Questions
1. Suppose a population is known to be normally distributed with a mean, μ, equal to...
1. Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 102 and 144? 2. Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 102 and 130? 3. Suppose a population is known...
Suppose that a population is known to be normally distributed with μ = 2,400 and σ...
Suppose that a population is known to be normally distributed with μ = 2,400 and σ = 220. If a random sample of size n = 8 is​ selected, calculate the probability that the sample mean will exceed 2,500.
Suppose that a population is known to be normally distributed with μ =2,300 and σ=250. If...
Suppose that a population is known to be normally distributed with μ =2,300 and σ=250. If a random sample of size n =8 is​ selected, calculate the probability that the sample mean will exceed 2,400.
A.) Suppose a population is known to be normally distributed with a mean, μ, equal to...
A.) Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 116 and 144? B.) Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 116 and 130? C.) Suppose a population is known...
Test the claim about the population mean μ at the level of significance α. Assume the...
Test the claim about the population mean μ at the level of significance α. Assume the population is normally distributed. Write out null and alternative hypotheses, your critical z-score and your z-test statistic. Decide whether you would reject or fail to reject your null hypothesis. Claim: μ > 28; α = 0.05, σ = 1.2 Sample statistics: x̅ = 28.3, n = 50 H0: Ha: Critical z-score: Z test statistic: Decision:
The random variable X is normally distributed. Also, it is known that P(X > 161) =...
The random variable X is normally distributed. Also, it is known that P(X > 161) = 0.04. [You may find it useful to reference the z table.] a. Find the population mean μ if the population standard deviation σ = 13. (Round "z" value to 3 decimal places and final answer to 2 decimal places.) b. Find the population mean μ if the population standard deviation σ = 24. (Round "z" value to 3 decimal places and final answer to...
Test the given claim using the α=0.01 significance level and assuming that the populations are normally...
Test the given claim using the α=0.01 significance level and assuming that the populations are normally distributed. Claim: The treatment population and the placebo population have the same mean. Treatment group: n=7, x⎯⎯⎯=88, s=5.3. Placebo group: n=9, x⎯⎯⎯=86, s=5. (a) The test statistic is . (b) What is the conservative estimate for the degrees of freedom? (c) The negative critical value is . (d) The positive critical value is .
You are considering a population that is normally distributed with μ = 22 and σ =...
You are considering a population that is normally distributed with μ = 22 and σ = 5. Compute the following by converting to the standard normal distribution and using the Alternate Z Table that I posted on Canvas (4 points each): a. p(X < 20) b. p(X > 21) c. p(23< X < 27) d. p(X < 19 or X > 23) e. p(X > 24 given that X > 23) f. The range of scores centered around the mean...
Assume the population X ~ N( μ, σ^2), and the null hypothesis to be tested is...
Assume the population X ~ N( μ, σ^2), and the null hypothesis to be tested is H0: σ^2= σ0^2. For the given size of the test a, if the critical region is (xa^2(n-l),+∞) , then the corresponding alternative hypothesis is H1: ____；if the alternative hypothesis is H1: σ^2≠σ0^2 the corresponding critical region is_____
Assuming that, in testing H0: μ =20 vs. H1 μ ≠20, you decide on the critical...
Assuming that, in testing H0: μ =20 vs. H1 μ ≠20, you decide on the critical region X bar ≤ 15 and X bar ≥ 25. Assume X is normally distributed, σ 2 = 25, and the following four random values are observed: 9, 20, 15, 11. a) Would you accept or reject H 0 ? b) What level of α is assumed here? c) What probability value would you report? d) What would be the appropriate critical region for...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT