In a survey, 23 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $37.4 and standard deviation of $17.9. Estimate how much a typical parent would spend on their child's birthday gift (use a 95% confidence level). Give your answers to 3 decimal places. Express your answer in the format of + E.

In a survey, 23 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $37.4 and standard deviation of $17.9. Estimate how much a typical parent would spend on their child's birthday gift (use a 95% confidence level). Give your answers to 3 decimal places. Express your answer in the format of + E.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Dont use excel
The latest SAT scores are out. The average SAT score for graduating seniors is 1059, and the standard deviation is 210. An exclusive academic fraternity wishes to contact those scoring in the the top 1% on the SAT. What score is required for you to make the cut? (Please round your answer to a whole number, eg 1014.)
A study was commissioned to find the mean weight of the residents in certain town. The study found the mean weight to be 174 pounds with a margin of error of 7 pounds. Which of the following is a reasonable value for the true mean weight of the residents of the town?
for the data shown, answer the questions, round to 2 decimal places, 10.9,12.5,29.8,19.3,19.7,23.3,2.8,29.2,23.5. find the mean, median and the standard deviation.
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?
Use the range rule of thumb to identify the values that are significantly low, the values that are signficantly high, and the values that are neither significantly low nor significantly high. A test is used to assess readiness for college. In a recent year, the mean test score was 19.8 and the standard deviation was 5.4, Identify the test scores that are significantly low or significantly high. What test scores are significantly low? Select the correct answer below and fill in the answer box(es) to complete your choice. O A. Test scores that are between (Round to one decimal place as needed. Use ascending order.) and Get more help - Next all 9:26 PM 47°F Clear 3/27/2022 近
Ten year old girls, the Mean is 54.4, the standard deviation 2.7, 95 percentile in height. How tall is she.
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?
An incoming freshman took her college's placement test in French and she scored 82 points. The overall results on the French test had a mean of 72 and a standard deviation of 8. Scores were normally distributed. Find the percentage of the students who scored higher than 82 points using your normal table. Write your answer without the % sign as a numerical value, for example write 52.7 for 52.7%.
Find the value of the standardized test statistic.
The average repair cost of a microwave oven is $55, with a standard deviation of $8. The costs are normally distributed. What is the range for the middle 50% of repair costs for microwave ovens? Label.