Use technology to construct the confidence intervals for the population variance o2 and the population standard deviation o. Assume the sample is taken froma normally distributed population. ntents Iccess c = 0.98, s = 38, n = 15 The confidence interval for the population variance is ( ). - Librai (Round to two decimal places as needed.) ptions tor

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# E DII C A previous study gave (0.11, 0.23) as a confidence interval for p. Find the minimum sample size required to ensure that your estimate (p) will be within 0.01 of p with 99% confidence. IMPORTANT: Use a critical value that you found with your calculator (not from a table), and round it to 3 places after the decimal point before you plug it into a formula and perform your calculations. Do not round-off any other intermediate results. n = F3 Submit Question $ 4 R F F4 V % 5 T J G F5 6 B Y H F6 & 7 X U N F7 - * PrtScn 8 F8 M K Home 9 F9 O End L F10 P Pg Alt

1. The joint density for the random variables (X, Y) is given below. T22+39) for 0 1) (g) If E[XY] = 0.5, find the correlation between X and Y %3D

please list z score  an the intervals like mean and standard devation. test stastic  fortmula with values the procedure name the parameter in c level context  and if its random or normal

Find the left and right chi square values, then give the confidence interval. Sample Variance s 15.99 %3D Confidence Level c = 0.90 and Sample Size n = 13 and x %3D %3D At the 90 % level of confidence the population variance is between and (Round all answers to 3 decimal places)

You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=29.2σ=29.2. You would like to be 95% confident that your esimate is within 0.2 of the true population mean. How large of a sample size is required?n =  9683 was mine but it was Incorrect.  right answer 81888  can you break down the work please with the calculator aswell

Interstate Speeds It has been reported that the standard deviation of the speeds of drivers on Interstate 75 near Findlay, Ohio, is 8 miles per hour for all vehicles. A driver feels from experience that this is very low. A survey is conducted, and for 29 drivers the standard deviation is 9.1 miles per hour. At =α0.05, is the driver correct? Assume the variable is normally distributed.  (a)State the hypotheses and identify the claim with the correct hypothesis.

6.2.9-T Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed. c = 0.95, x= 13.4, s= 3.0, n= 8 The 95% confidence interval using a t-distribution is (Round to one decimal place as needed.)

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