
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Out of 300 students in the school, 225 passed an exam. You take a sample of 10 of these students. What is the standard error of p?
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- You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. how many randomly selected air passengers must you survey? assume that you want to be 90% confident that the sample percentage is within 3.5 percentage points of the true population percentage. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n= Round to the nearest integer.arrow_forwardHi, please find the sample for each random number. choosing an odd number from 1 to 11 at random.arrow_forwardPlease answer quickly!arrow_forward
- A jeep gets 53 highway miles per gallon. Howvever, an SUV believes gas mileage for their new line is much better. In order to test, they collect a random sample of 8 jeeps. The results of the 8 cars tested as as follows: 56, 51, 55, 54, 57, 48, 56, and 51. If you perform this test at a= .05 level, state the p-value and the conclusion of the test.arrow_forwardA sample of 2600 people were asked if they felt "good" about the economy. A 95% CI for the proportion who answer 'yes' is: 0.54 < p < 0.62 Many textbooks use the symbol p for the sample proportion. What is p in this problem? Submit Question Previousarrow_forward374 is 22% of the sample size. Find narrow_forward
- Claim: Fewer than 94 % of adults have a cell phone. In a reputable poll of 1119 adults, 87 % said that they have a cell phone. Find the value of the test statistic.arrow_forwardSample # 1 and has been provided in the second screenshot (hand written)arrow_forwardUse the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 95% confidence that your error is no more than 0.03.arrow_forward
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