Use the given information to find the number of degrees of freedom, the critical values χ2L and χ2R, and the confidence interval estimate of σ. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 98% confidence; n=22, s=65.2. df= (type a whole number) X2/L= (round to three decimal places as needed) X2/R= (round to three decimal places as needed) The confidence interval estimate of σ is __ < σ < __. (round to one decimal place as needed)
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The confidence interval estimate of σ is __ < σ < __.
(round to one decimal place as needed)
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- Use the given information to find the number of degrees of freedom, the critical values y? and y?, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 95% confidence; n= 26, s= 0.27 mg. = Click the icon to view the table of Chi-Square critical values. df%3D (Type a whole number.)Here are summary statistics for randomly selected weights of newborn girls: n=36, x=3211.1g, s=689.4g. Use a confidence level of 95% to complete parts (a) through (d) below. a. Identify the critical value tα/2 used for finding the margin of error. tα/2=enter your response here (Round to two decimal places as needed.) Part 2 b. Find the margin of error. E=enter your response here g (Round to one decimal place as needed.) Part 3 c. Find the confidence interval estimate of μ. enter your response here g<μ<enter your response here g (Round to one decimal place as needed.) Part 4 d. Write a brief statement that interprets the confidence interval. Choose the correct answer below. A. One has 95% confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of newborn girls. B. One has 95% confidence that the sample mean weight of newborn girls is equal to the population mean weight of…Use the given information to find the number of degrees of freedom, the critical values y? and y?, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 90% confidence; n= 23, s = 65.4. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.)
- 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.Use a t-distribution to find a confidence interval for the difference in means μ = μ₁ - ₂ using the relevant sample results from paired data. Assume the results come from random samples from populations that are approximately normally distributed, and that differences are computed using d = x₁ - x₂. A 99% confidence interval for using the paired data in the following table: best estimate- i margin of error- i The 99% confidence interval is i Save for Later Case Treatment 1 Treatment 2 1 22 19 2 to 3 27 30 Give the best estimate for 4, the margin of error, and the confidence interval. Enter the exact answer for the best estimate, and round your answers for the margin of error and the confidence interval to two decimal places. 28 24 4 5 25 28 21 21Use the given information to find the number of degrees of freedom, the critical values y? and y?, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 80% confidence; n= 26, s = 65.4. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.) (Round to three decimal places as needed.) (Round to three decimal places as needed.) The confidence interval estimate of o isUse the given information to find the number of degrees freedom, the critical values x? and x, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 98% confidence; n= 27, s = 65.9. Click the icon to view the table of Chi-Square critical values. df =(Type a whole number.) (Round to three decimal places as needed.) 口 (Round to three decimal places as needed.) The confidence interval estimate of o isA sample of size n=37 is drawn from a population whose standard deviation is a = 43. Find the margin of error for a 90% confidence interval for μ. Round the answer to at least three decimal places. The margin of error for a 90% confidence interval for u is X 5 B 00Use the given information to find the number of degrees of freedom, the critical values x and x, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 95% confidence; n= 29, s = 65.3. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.)Use the given information to find the number of degrees of freedom, the critical values χ2L and χ2R,and the confidence interval estimate of σ. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 95% confidence; n=20, s=0.28 mg. LOADING... Click the icon to view the table of Chi-Square critical values.A random sample of n = 16 mid-sized cars tested for fuel consumption gave a mean of x = 21.00 miles per gallon with a standard deviation of s = 2.98 miles per gallon. Assuming that the miles per gallon given by all mid-sized cars have a normal distribution, find a 99 % confidence interval for the population mean, u. Round your answers to two decimal places. i iA random sample of students taking STAT 201 this semester was pulled. Among other things, the survey asked the number of hours the student spent studying for the final exam. StatCrunch was used to create the output for a 95% confidence interval estimate for the population mean number of hours students spend studying for the final exam. 95% confidence interval results: Variable Sample Mean Std. Err. DF L. Limit U. Limit # hours 6.05 0.31 64 5.42 6.67 Give the value of the point estimate used to calculate the confidence interval. (Do not round your answer)SEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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