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1. Calculate the upper 80%.confidence interval for the population mean. (round to the nearest tenth; place your answer in the box below) 2. If we change the confidence level from 80% to 95% when constructing a Cl for the population mean, we can expect the size of the interval to(increase/decrease, place your answer right beside the confidence interval without a space and without brackets) Full credit will be given if 1 and 2 are correct. Check your spelling!

1. Calculate the upper 80%.confidence interval for the population mean. (round to the nearest tenth; place your answer in the box below) 2. If we change the confidence level from 80% to 95% when constructing a Cl for the population mean, we can expect the size of the interval to(increase/decrease, place your answer right beside the confidence interval without a space and without brackets) Full credit will be given if 1 and 2 are correct. Check your spelling!

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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F4 A random sample of 90 students at the University has a body weight of 75Kg: It is known from past history that the o2 (population variance) of the body weight is 133 Kg2 R 1. Calculate the upper 80%.confidence interval for the population mean. (round to the nearest tenth; place your answer in the box below) 2. If we change the confidence level from 80% to 95% when constructing a CI for the population mean, we can expect the size of the interval to(increase/decrease, place your answer right beside the confidence interval without a space and without brackets) Full credit will be given if 1 and 2 are correct. Check your spelling! Click Save and Submit to save and submit. Click Save All Artswers to save all answers. F5 % T G (₁) F6 A 6 Y F7 LCD/G SONY F8 & 7 7 |J F9 ** 8 (8) Q 9 5 K WEB F10 9 2 → C One Touch Web Access Without Bo F11 0 6 L 1 P Save All Answers 3 F12 * ...S Save an Num Lk Scr Lk + Enter
Transcribed Image Text:F4 A random sample of 90 students at the University has a body weight of 75Kg: It is known from past history that the o2 (population variance) of the body weight is 133 Kg2 R 1. Calculate the upper 80%.confidence interval for the population mean. (round to the nearest tenth; place your answer in the box below) 2. If we change the confidence level from 80% to 95% when constructing a CI for the population mean, we can expect the size of the interval to(increase/decrease, place your answer right beside the confidence interval without a space and without brackets) Full credit will be given if 1 and 2 are correct. Check your spelling! Click Save and Submit to save and submit. Click Save All Artswers to save all answers. F5 % T G (₁) F6 A 6 Y F7 LCD/G SONY F8 & 7 7 |J F9 ** 8 (8) Q 9 5 K WEB F10 9 2 → C One Touch Web Access Without Bo F11 0 6 L 1 P Save All Answers 3 F12 * ...S Save an Num Lk Scr Lk + Enter
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