Use the sample information ¯x¯ = 43, σ = 3, n = 13 to calculate the following confidence intervals for μ assuming the sample is from a normal population.   (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from _______ to _______.   (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from _______ to _______.   (c) 99 percent confidence. (Round your answers to 4 decimal places.) The 99% confidence interval is from _______ to _______.

Construct the confidence interval for the population mean μ. c=0.90​, x=7.2​, σ=0.4​, and n=48   A 90​% confidence interval for μ is _______ ​(Round to two decimal places as​ needed.)

If n=27, x¯(x-bar)=41, and s=3, construct a confidence interval at a 98% confidence level. Assume the data came from a normally distributed population.Give your answers to one decimal place. _________< μ< _______

A sample​ mean, sample​ size, population standard​ deviation, and confidence level are provided. Use this information to complete parts​ (a) through​ (c) below.   x=35​, n=27​, σ=5 confidence level=90​%   a. Use the​ one-mean z-interval procedure to find a confidence interval for the mean of the population from which the sample was drawn.   The confidence interval is from _______ to _________. ​(Type integers or decimals rounded to one decimal place as​ needed.)   b. Obtain the margin of error by taking half the length of the confidence interval.   What is the length of the confidence​ interval?   ____________ ​(Type an integer or decimal rounded to one decimal place as​ needed.)   c. Obtain the margin of error by using the formula E=zα2•σn.   Identify the critical value. zα2=____________ ​(Type an integer or decimal rounded to two decimal places as​ needed.)   What is the margin of error obtained using the methods of parts​ (b) and​(c)? _________ ​(Type an integer or decimal…

You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 70 dates, the mean record high daily temperature in a certain city has a mean of 86.37°F Assume the population standard deviation is 14.38 F The 90% confidence interval is ( I) (Round to two decimal places as needed.) The 95% confidence interval is ( D (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. The 90% confidence interval The 95% confidence interval Interpret the results. O A. You can be 90% confident that the population mean record high temperature is between the bounds of the 90% confidence interval, and 95% confident for the G50% intonial Click to select your answer(S). 180min ZoT oo

Use the sample information. X = 40, 0 = 4, and n= 20 to calculate the following confidence intervals assuming the sample is from a normal population. A.  90% confidence from____to____ (Round 4 decimal places.) B.  95% confidence interval is from_____to_____ (Round 4 decimal places.) C.  99% confidence interval is from______to_____ (Round 4 decimal places.) D.  Describe how the intervals change as you increase the confidence level. A.  The interval gets narrower as the confidence level increases B.  The interval gets wider as a confidence level decreases C.  The interval gets wider as a confidence level increases D.  The interval stays the same as the confidence level increases

Question 6 Suppose A and B are two events with probabilities: Find the following: a) P(ANB). b) P(A). c) P(Bº). d) P((An B)*). Edit View Insert Format Tools Table 12pt v P(Aª) = .40, P(B) = .25, P(A U B) = .75. ✓ Paragraph BIUAT² : B Q Search V

If n=25, ¯x¯=47, and s=14, construct a confidence interval at a 95% confidence level. Give your answers to one decimal place. ____< μμ < ____

Use the sample information x¯x¯  = 38, σ = 4, n = 11 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.)  The 90% confidence interval is from        ?    to     ?  (b) 95 percent confidence. (Round your answers to 4 decimal places.)  The 95% confidence interval is from           ?     to      ?   (c) 99 percent confidence. (Round your answers to 4 decimal places.)  The 99% confidence interval is from           ?      to       ?  (d) Describe how the intervals change as you increase the confidence level.   multiple choice The interval gets narrower as the confidence level increases. The interval gets wider as the confidence level decreases. The interval gets wider as the confidence level increases. The interval stays the same as the confidence level increases.

Express the confidence interval (72.5%,86.7%) in the form of ˆp±ME_______% ± ________ %