Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the criticalvalue ta/2, (b) find the critical value za/2, or (c) state that neither the normal distribution nor the t distributionapplies.30어20어The confidence level is 99%, o is not known, and the histogram of 66 player salaries (in thousands of dollars) offootball players on a team is as shown.10-4000 8000 12000 16000 20000Salary (thousands of dollars)Frequency

Solution: n= 66 Sample size of football player. C=99%= 0.99 confidence level α=1-C=0.01 Level of…

Answered: Assume that we want to construct a…

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 particular fruit's weights are normally distributed, with a mean of 492 grams and a standard deviation of 14 grams. If you pick one fruit at random, what is the probability that it will weigh between 479 grams and 511 grams
QUESTION 3 A wholesaler must decide how many computers to purchase before they know how many they will be able to sell to local retailers. The wholesaler purchases the computers for S300 each and sells them to retailers for $350 each. If the wholesaler is not able to sell them to a retailer then the wholesaler can return them to the manufacturer (for a refund of the S300 cost), but the wholesaler must pay $40 per computer that it returns to the manufacturer (in shipping, handling, and insurance costs). The following probability distribution describes the number of computers the wholesaler may possibly sell to local retailers: there is a 21% chance that they will sell 900 computers, a 56% chance that they will sell 1200 computers; otherwise, they will sell 1500 computers. What is the expected number of computers the wholesaler will sell? (please round your answer to 1 decimal place)
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Milan n.n
A sample of 100 students was taken from the introductory statistics classes. This group averaged 74.5 on the final exam with a sample standard deviation of 3.2. Assuming that this group is a random sample of all students who have taken statistics and the scores in the final exam for all students are approximately normally distributed, what is the approximately 95% confidence interval for the true population mean of all statistics students?
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