What value of Z /2 should be used to construct a 98% CI? What value of...

Question

Question

Answer 1

Answer #1

Part a)

$Z_{\alpha /2} = Z_{ 0.02 /2 } = 2.33$

Part b)

$t_{\alpha /2, n-1} = t_{0.05 /2, 15-1} = 2.145$

Answer 2

Similar Homework Help Questions

What value of z* should be used to construct a 95% confidence interval of a population...

What value of z* should be used to construct a 95% confidence interval of a population mean? Answer choices are rounded to the hundredths place.
What critical value t∗ from Table D should be used to construct a 95% confidence interval...

What critical value t∗ from Table D should be used to construct a 95% confidence interval for μ (the population mean) when n = 15 (if applicable, please round your answer to at least 3 decimal places)? You are given only the following information for a hypothesis test of H0: μ=10versusHa: μ̸=10: x ̄ = 12.2 P-value = 0.08 Suppose, based on prior knowledge, the alternative Ha: μ < 10 was actually more appropriate. What is the P-value for the...
6. + -16.66 points MIntroStat97E004.Tut What critical value t* from Table D should be used to...

6. + -16.66 points MIntroStat97E004.Tut What critical value t* from Table D should be used to construct the following? (Round your answers to three decimal places. (a) a 95% confidence interval when n-29 (b) a 99% confidence interval when n 17 (c) a 90% confidence interval when n-61

1. A random sample of size n is drawn from a population that is normally distributed...

1. A random sample of size n is drawn from a population that is normally distributed with a standard deviation of 8. The sample mean is found to be 50. 1.a) Construct a 98% confidence interval (CI) for the population mean uif the sample size is 16. The critical value used is The (margin of) error for the 98% confidence interval (C.I.) is The resulting Cl is 1.b) Construct a 95% confidence interval for the population mean u if the...
What is the value of z if the area between -z and z is 0.802 c....

What is the value of z if the area between -z and z is 0.802 c. Conhas nterual 1 - 18 -1020 t12889 1.25-2 Confidence z ti. 1- Z tl.28 2 - 1.28- hind n ta
How do you determine t or z? what should the choice be for this question? Assume...

How do you determine t or z? what should the choice be for this question? Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2, (b) find the critical value Za/2, or (c) state that neither the normal distribution nor the t distribution applies. Here are summary statistics for randomly selected weights of newborn girls: n = 287, X = 29.3 hg, s = 7.5 hg. The confidence...

D Question 17 0.3 pts What is the critical value za/2 for a 98% level of...

D Question 17 0.3 pts What is the critical value za/2 for a 98% level of confidence? (Round to the nearest hundredth) Question 18 0.3 pts What is X2R for a sample of size n-23 at the 95% level of confidence? (Round to the nearest thousandth.) Question 19 0.3 pts What is the margin of error for the confidence interval 0.123 p<.14 thousandth.) 7? (Round to the nearest
A. What is Ha? B. What is the value of T=? A. What is the critical...

A. What is Ha? B. What is the value of T=? A. What is the critical value? B. What is the correct decision? C. What is the 95% CI for sigma? C. What is the 95% CI for sigma? Inferences for a Single Variance Use the information in Exercises 7 and 8 to test Ho : 02 = 0% versus the given alternate hypothesis. Construct a (1 - a) 100% confidence interval for o2 using the x statistic. 7. n...
I can't seem to get the P value or the 95% CI (2 points) A study...

I can't seem to get the P value or the 95% CI (2 points) A study is conducted to determine if a newly designed text book is more helpful to learning the material than the old edition. The mean score on the final exam for a course using the old edition is 75. Ten randomly selected people who used the new text take the final exam. Their scores are shown in the table below. Person ABCDEFGHIJ Test Score 86 91...

6. Assume you want to construct a 98% confidence interval with a sample of n-10 from...

6. Assume you want to construct a 98% confidence interval with a sample of n-10 from ofa nomally distributed population. Find the critical value ta2 (1 point) 2764 02.821 0 1.383 O3.250 7. A sample of size n - 12 does not have a known population standard deviation. The population (1 point) appears to be normally distributed. Determine whether a margin of error should be calculated using a critical value of za2, a critical value of t, or neither. a...