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.
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A: Given: n = 59 sample mean = x bar = 84.52 sigma = 14.57
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- 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 77 dates, the mean record high daily temperature in a certain city has a mean of 84.21°F. Assume the population standard deviation is 14.47°F. The 90% confidence interval is ( ). (Round to two decimal places as needed.) The 95% confidence interval is ( ) (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. The 90% confidence interval O The 95% confidence interval Interpret the results. O A. You can be certain that the population mean record high temperature is either between the lower bounds of the 90% and 95% confidence intervals or the upper bounds of the 90% and 95% confidence intervals. O B. You can be 90% confident that the population mean record high temperature is outside the…Use technology to construct the confidence intervals for the population variance of and the population standard deviation o. Assume the sample is taken from a normally distributed population. c=0.95, s=37, n= 18 The confidence interval for the population variance is (770 86, 3076.74). (Round to two decimal places as needed.) .... The confidence interval for the population standard deviation is (Round to two decimal places as needed.) More Help me solve this View an example Get more help- Clear all 55°F AO Type here to search 99+ Lenovo AL BTY 10/05/17 Insert Delete PrtSc F11 F12 F9 F10 C F5 F7 F8 F6 F4 F3 Esc F1 F2 Bac @ 23 7 6- 3 4 5 团 %24Suppose you take a random sample of n = 80 Douglas College students and ask each student their age. You find that the mean age of students in this sample is X = 22.0375 years and the sample standard deviation is s = 3.2014 years. Fill in the blanks (rounding to four decimal places): The 95% confidence interval for the mean age μ of all Douglas College students is from ______ years to ______ years.
- A statistics class is estimating the mean height of all female students at their college. They collect a random sample of 42 female students and measure their heights. The mean of the sample is 65.3 inches and the sample standard deviation is 5.4 inches. Find the 90% confidence interval for the mean height of all female students in their school? Assume that the distribution of individual female heights at this school is approximately normal. 1. The t value is 1.3025 2. The standard error has a value of -- 3. The margin of error has a value of 4. Find the 90% confidence interval for the mean height of all female students in their schoolYou 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 44 business days, the mean closing price of a certain stock was $124.01. Assume the population standard deviation is $964. The 90% confidence interval is ( (Round to two decimal places as needed.) (1,1) More Clear all Final che View an example Get more help - Help me solve this MacBook Air DII SO F4 F3 %23 8 3 4 5 6 2 Q E R Y W E G H K ト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 75 dates, the mean record high daily temperature in a certain city has a mean of 82.74°F Assume the population standard deviation is 13.95°F. The 90% confidence interval is ( D (Round to two decimal places as needed.) The 95% confidence interval is ( ). (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. TO The 90% confidence interval O The 95% confidence interval Interpret the results. OA. You can be certain that the mean record high temperature was within the 90% confidence interval for approximately 68 of the 75 days, and was within the QE0L confidonco Intorval for annrovimatoly 71 nf the 7E dave
- 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…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 86.06°F. Assume the population standard deviation is 14.65°F. The 90% confidence interval is ( ). (Round to two decimal places as needed.) The 95% confidence interval is ( ). (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. O The 90% confidence interval O 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 95% interval. O B. You can be certain that the mean record high temperature was within the 90% confidence interval for approximately 63 of…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 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 41 business days, the mean closing price of a certain stock was $124.74 Assume the population standard deviation is $10.58 The 90% confidence interval is (,). (Round to two decimal places as needed.)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 58dates, the mean record high daily temperature in a certain city has a mean of 82.72°F. Assume the population standard deviation is 15.42°F. The 90% confidence interval is (enter your response here,enter your response here). (Round to two decimal places as needed.)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 43 business days, the mean closing price of a certain stock was $107.58. Assume the population standard deviation is $10.01. The 90% confidence interval is ( ). (Round to two decimal places as needed.)
