Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed.c= 0.99, x= 13.5, s=0.74, n=13(Round to one decimal place as needed.)O TimeStatcrunchMacBook AirDII80F6F7escF3F4F5F1F2&@23%24%4

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Answered: Construct the indicated confidence…

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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The data below represent a random sample of 9 scores on a statistics quiz. (The maximum possible score on the quiz is 10.) Assume that the scores are normally distributed with a standard deviation of 2.5. Estimate the population mean with 95% confidence. 6,9,6,5,4,7,3,10,6 Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits. Confidence Interval =
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Use the t-distribution to find a confidence interval for a mean u given the relevant sample results. Give the best point estimate for µ, μ the margin of error, and the confidence interval. Assume the results come from a random sample from a population that is approximately normally distributed. A 95% confidence interval for μ using the sample results x = 87.9, s = 7.0, and n 42 Round your answer for the point estimate to one decimal place, and your answers for the margin of error and the confidence interval to two decimal places. point estimate = margin of error = The 95% confidence interval is i to i
Please answer the question in the photo. TY!
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.
Assume that adults have IQ scores that are normally distributed with a mean of 98.4 and a standard deviation 18.1. Find the first quartile Q₁, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.) The first quartile is (Type an integer or decimal rounded to one decimal place as needed.) www
Can you fill out the blanks.
Construct a confidence interval of the population proportion at the given level of confidence. x equalsx=540540, n equalsn=11001100, 9595% confidence Click here to view the standard normal distribution table (page 1). LOADING... Click here to view the standard normal distribution table (page 2). LOADING... The lower bound of the confidence interval is nothing . (Round to three decimal places as needed.) The upper bound of the confidence interval is nothing . (Round to three decimal places as needed.) Enter your answer in each of the answer boxes.
Construct a confidence interval of the population proportion at the given level of confidence. x=860, n = 1200, 95% confidence Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). BENGKE 202 The lower bound of the confidence interval is 691 (Round to three decimal places as needed.) The upper bound of the confidence interval is (Round to three decimal places as needed.) CON SEME ++ d kepad DAPA ...
Use the standard normal distribution or the t-distribution to construct a 90% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a random sample of 46 people, the mean body mass index (BMI) was 27.8 and the standard deviation was 6.09. Which distribution should be used to construct the confidence interval? Choose the correct answer below. ○ A. Use a t-distribution because the sample is random, the population is normal, and σ is unknown. ○ B. Use a normal distribution because the sample is random, the population is normal, and σ is known. ○ C. Use a t-distribution because the sample is random, n ≥30, and σ is unknown. ○ D. Use a normal distribution because the sample is random, n ≥30, and σ is known. ○ E. Neither a normal distribution nor a t-distribution can be used because either the sample is not random, or n <30, and the population is not known to be normal.
Round to one decimal place as needed
I have only 30 min. Please help

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Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed. c= 0.99, x= 13.5, s=0.74, n 13 (Round to one decimal place as needed.) O Tim