A researcher must estimate the mean temperature (in degrees Fahrenheit) with the followingsample temperatures:70.863.879.262.181.358.383.6Assuming the population of temperatures are normally distributed, find the 95% confidenceinterval. Round the answers to two decimal places. Enter your answer as an interval of the form (LB,UP).The researcher is 95% confident that the population average temperature is within the temperatureinterval The high temperatures (in degrees Fahrenheit) of a random sample of 5 small towns are:96.596.499.499.397.4Assume high temperatures are normally distributed. Based on this data, find the 95% confidenceinterval of the mean high temperature of towns. Enter your answer as an open-interval (i.e.,parentheses) accurate to two decimal places (because the sample data are reported accurate to onedecimal place).95% C.I. =Answer should be obtained without any preliminary rounding. However, the critical value may berounded to 3 decimal places.

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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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…
Construct the confidence interval for the population mean u. c = 0.90, x = 5.3, o = 0.8, and n= 54 A 90% confidence interval for u is ( D. (Round to two decimal places as needed.) Enter your answer in the edit fields and then click Check Answer. All parts showing Type here to search
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
You measure 46 turtles' weights, and find they have a mean weight of 36 ounces. Assume the population standard deviation is 3.4 ounces. Based on this, construct a 80% confidence interval for the true population mean turtle weight.Give your answers as decimals, to two places ¯x ± M.O.E._________ ± ________ounces
Score: 30.8/100 7/16 answered Question 6 く> In a recent poll, 590 people were asked if they liked dogs, and 70% said they did. Find the Margin of Error for this poll, at the 90% confidence level. Give your answer to four decimal places if possible. Submit Question MacBook
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Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
A researcher wants to estimate the mean blood cholesterol level of young men ages 15-25 with a 90.15% confidence interval. The blood cholesterol level of young men follows a Normal distribution with standard deviation σσ = 45 mg/dl. How large a sample would the researcher need to take to estimate the mean blood cholesterol to within 5 mg/dl? A sample of at least ________ people.
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You measure 30 watermelons' weights, and find they have a mean weight of 67 ounces. Assume the population standard deviation is 9.3 ounces. Based on this, construct a 88% confidence interval for the true population mean watermelon weight.Give your answers as decimals, to two placesx ± M.O.E. ______ ± ___________ ounces
Pulse Rates (beats per minute) Males Females 85 74 81 86 75 62 95 80 48 75 56 73 63 73 69 75 50 86 89 87 54 54 61 65 81 51 77 55 77 81 87 91 51 72 87 90 63 63 57 93 74 64 38 68 58 96 64 90 66 55 86 79 76 67 74 81 82 58 78 74 67 59 65 57 66 65 66 97 96 69 78 73 44 86 62 78 86 58 64 76

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