uf10a. Identify the critical value a/2 used for finding the margin of error1/2-0(Round to two decimal places as needed.)b. Find the margin of errorE-9(Round to one decimal place as needed.)c. Find the confidence interval estimate of µ.<<(Round to one decimal place as needed.)d. Write a brief statement that interprets the confidence interval. Choose the correct answer below.OA. There is a 99% chance that the true value of the population mean weight of newborn girls will fall between the lower bound and the upper bound.B. One has 99% confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of newborn girls.OC. One has 99% confidence that the sample mean weight of newborn girls is equal to the population mean weight of newborn girls.OD. Approximately 99% of sample mean weights of newborn girls will fall between the lower bound and the upper bound. Here are summary statistics for randomly selected weights of newborn girls: n = 36, x=3211.1 g, s= 689.4 g. Use aconfidence level of 90% to complete parts (a) through (d) below.

Answered: 4/2=0 (Round to two decimal places as…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t/2, (b) find the critical value z,/2, or (c) state that neither the normal distribution nor the t distribution applies. 230, x 32.6 hg, s = 7.9 hg. The confidence level is 90% Here are summary statistics for randomly selected weights of newborn girls: n Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. (Round to two decimal places as needed.) В. Za/2 (Round to two decimal places as needed.) C. Neither the normal distribution nor the t distribution applies.
# 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
n1=16 x‾1=124 s1=35 n2=12 x‾2=86 s2=31 Use this data to find the 98% confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed. Copy Data Step 2 of 3 : Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places. Step 3 of 3 : Please also find the high and low endpoints and round to four decimal points.
Which of these is NOT a way to express a confidence interval for the mean? (59.41, 81.72) 46.78 < x̄ < 62.90 42 ± 3.2 45.2 < μ < 63.7
Interpretation of the data. t = -3.4554, df = 6991, p-value = 0.0002763 alternative hypothesis: true mean is less than 50 95 percent confidence interval: -Inf 49.25556 sample estimates: mean of x 48.57909
Find the level of the confidence interval that has the value Za/2 = 1.28. (Round the final answer to three decimal places.)
Here are summary statistics for the weights of Pepsi in randomly selected cans: n=36, x=0.82409 lb, s = 0.00567 lb. Use a confidence level of 99% to complete parts (a) through (d) below.
Please help me confim this information is correct and at the end portion the P val.. does this need to be subtracted by 1. To get the answer since is positive not negative? Thank you so much
Use the sample information x⎯⎯x¯ = 42, σ = 7, n = 16 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.) (b) 95 percent confidence. (Round your answers to 4 decimal places.) (c) 99 percent confidence. (Round your answers to 4 decimal places.) (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.

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4/2=0 (Round to two decimal places as needed.) b. Find the margin of error. E-9 (Round to one decimal place as needed.) c. Find the confidence interval estimate of u. <μ< (Round to one decimal place as needed.)