QUESTION 30The price of Apple iPad 2021 is recorded at a random sample of 64electronics stores in UAE. The resulting 90% z-based confidence intervalfor the mean price of Apple iPad 2021 was (1610 Dhs, 1744 Dhs). Whatis the sample mean used when computing the interval. Round youranswer to one decimal place.QUESTION 31Find the confidence level related to the critical value98.3%94.7%97.1%92.1%Za/2=1.759

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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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A survey was conducted that asked 976 people how many books they had read in the past year. Results indicated that x= 14.2 books and s= 17.7 books. Construct a 90% confidence interval for the mean number of books people read Interpret the Construct a 90% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to two decimal places as needed.) O A. There is 90% confidence that the population mean number of books read is between and O B. If repeated samples are taken, 90% of them will have a sample mean between and OC. There is a 90% probability that the true mean number of books read is between and O Time Remaining: 00:58:23 Next Statcrunch 350 PM O 67°F Sunny ヘ回 12/1/2021 P Type here to search DELL F9 F10 F11 F12 PrtScr Insert Delete F3 F4 F5 F6 F7 F8 Esc F1 F2 @ # $ % & Backspace 2 3 4 6 7 1 W E R Y U Tab Enter A S D J K Caps Lock
Suppose a researcher wants to test if the average diastolic blood pressure in African-Americans is different than the average diastolic blood pressure in the general population. Note that the average diastolic blood pressure in the general population is 70 mmHG. The researcher retains the null hypothesis, so she therefore concludes... Group of answer choices The mean diastolic blood pressure in African-Americans is equal to that of the general population The mean diastolic blood pressure in African-Americans is different than that of the general population
Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?
Nabisco claims that Chip Ahoy Cookies have an x ̅=28.67 chocolate chips per cookie with a SD=2.67. You randomly select 36 cookies from a new bag and carefully remove all the chocolate chips from each of the 36 cookies. You find the mean of the chocolate chips for the 36 cookies is 24.27 chocolate chips per cookie. Calculate the standard error for the chocolate chips in your experiment. (round to the nearest hundredth).
A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from a data set, his height converts to the z score of 5.17. How many standard deviations is his height above the mean?
A survey was conducted that asked 1013 people how many books they had read in the past year. Results indicated that x=10.3 books and s=16.6books. Construct a 90% confidence interval for the mean number of books people read. Interpret the interval. Construct a 90% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to two decimal places as needed.) A. There is a 90% probability that the true mean number of books read is between ___ and ____ B. There is 90% confidence that the population mean number of books read is between ___ and ____. C. If repeated samples are taken, 90% of them will have a sample mean between ___ and ___.
In ABC High School, the mean IQ test score of the first year students is 102 and the standard deviation is 12. What is the z-score of a student whose IQ test score is 106?
Each of a sample of 171 residents selected from a small town is asked how much money he or she spent last week on state lottery tickets. 90 of the residents responded with $0 . The mean expenditure for the remaining residents was $23 . The largest expenditure was $250 --> What is the mode of the data?
The mean score on a set of 17 tests is 82. Suppose two more students take the test and score 66 and 56. What is the new mean?
In a psychology class, 40 students have a mean score of 89.5 on a test. Then 24 more students take the test and their mean score is 78.3.What is the mean score of all of these students together? Round to one decimal place.
A clinical psychologist took a sample of four people from the population of people with anxiety disorders and gave them an interval-level anxiety scale. Their score were 57, 60, 67, and 68 with a mean of 63.00. What is s?
grade was 74 and the standard deviation was 12. She received a grade of 72 on her biology exam, where the mean grade A student Pat was done taking midterms. She received a grade of 82 on her statistics exam, where the mean grade was 88 and the standard deviation was 6. In what class did Pat relatively score better? Explain. Give answers to was 65 and the standard deviation was 10. Lastly, she received a grade of 91 on her kayaking exam where the mean 2 decimal places as needed.

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