Please answer b Six different national brands of chocolate chip cookies were randomly selected at the supermarket. The grams of fat per serving are as follows: 8; 8; 11; 7; 9; 9. Assume the underlying distribution isapproximately normal.NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.)O Part (a)Construct a 90% confidence interval for the population mean grams of fat per serving of chocolate chip cookies sold in supermarkets.(1) State the confidence interval. (Round your answers to two decimal places.)7.2310.11(ii) Sketch the graph.a0.025C.L.0.950.02527.2310.11(iii) Calculate the error bound. (Round your answer to two decimal places.)1.44O Part (b)If you wanted a smaller error bound while keeping the same level of confidence, what should have been changed in the study before it was done?O decrease the sample sizeO increase the sample sizeO determine the population standard deviationO nothing can be changed to guarantee a smaller error bound

Answered: Image /qna-images/answer/7cdea0e7-9ef8-43dd-a81f-4381a967d0f9.jpg

Six different national brands of chocolate chip cookies were randomly selected at the supermarket. The grams of fat per serving are as follows: 8; 8; 11; 7; 9; 9. Assume the underlying distribution is approximately normal. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) O Part (a) Construct a 90% confidence interval for the population mean grams of fat per serving of chocolate chip cookies sold in supermarkets. ) State the confidence interval. (Round your answers to two decimal places.) 7.23 10.11 (ii) Sketch the graph. 0.025 C.L. = 0.95 0.025 7.23 10.11 (i) Calculate the error bound. (Round your answer to two decimal places.) 1.44 O Part (b) If you wanted a smaller error bound while keeping the same level of confidence, what should have been changed in the study before it was done? O decrease the sample size O increase the sample size O determine the population standard deviation O nothing can be changed to guarantee smaller error bound

Six different national brands of chocolate chip cookies were randomly selected at the supermarket. The grams of fat per serving are as follows: 8; 8; 11; 7; 9; 9. Assume the underlying distribution is approximately normal. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) O Part (a) Construct a 90% confidence interval for the population mean grams of fat per serving of chocolate chip cookies sold in supermarkets. ) State the confidence interval. (Round your answers to two decimal places.) 7.23 10.11 (ii) Sketch the graph. 0.025 C.L. = 0.95 0.025 7.23 10.11 (i) Calculate the error bound. (Round your answer to two decimal places.) 1.44 O Part (b) If you wanted a smaller error bound while keeping the same level of confidence, what should have been changed in the study before it was done? O decrease the sample size O increase the sample size O determine the population standard deviation O nothing can be changed to guarantee smaller error bound

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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Question

Please answer b

Six different national brands of chocolate chip cookies were randomly selected at the supermarket. The grams of fat per serving are as follows: 8; 8; 11; 7; 9; 9. Assume the underlying distribution is
approximately normal.
NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.)
O Part (a)
Construct a 90% confidence interval for the population mean grams of fat per serving of chocolate chip cookies sold in supermarkets.
(1) State the confidence interval. (Round your answers to two decimal places.)
7.23
10.11
(ii) Sketch the graph.
a
0.025
C.L.
0.95
0.025
2
7.23
10.11
(iii) Calculate the error bound. (Round your answer to two decimal places.)
1.44
O Part (b)
If you wanted a smaller error bound while keeping the same level of confidence, what should have been changed in the study before it was done?
O decrease the sample size
O increase the sample size
O determine the population standard deviation
O nothing can be changed to guarantee a smaller error bound

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