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Construct a 95% condence interval for the number of toys that are from china in a random sample of 210 toys. It is estimated that
Construct a 95% condence interval for the number of toys that are from china in a random sample of 210 toys. It is estimated that 70% of all the world's toys come from china. Use the following Desmos Applet to help answer question https://www.desmos.com/calculator/xwe9ywwjik A) What would be the zcritical value? (two decimal places) 1.96 B) What is the standard error or standard deviation (Sigma value)? 253 C) What is the margin of error? (Round to nearest whole number) 6.64 D) What is the expected number of toys in random sample of 210 toys? 147 E) What is the upper limit of confidence interval? 153 -A VV F) What is the lower limit of confidence interval? 134 -A '7 Choose... V 1.96 136 158 2.58 6.64 1.645 123 11 160 134 149 147 13Due to customer complaints. a manufacturer of tortilla chips sends a researcher to 5 randomly chosen stores to test the percentage of chips that are broken in 5 randomly chosen bags of chips. The researcher found that 23% of the 800 chips tested were broken. The researcher calculated the 95% condence interval to go from 20% to 26%. Decide which of the following statements are accurate. Select one or more: a. Approximately 20% to 26% of all bags of chips made by this manufacturer contain broken tortilla chips ' b. The Standard Error for condence interval is 3%. c. We are 95% certain that the actual (average) percentage of broken tortilla chips in bags made by this manufacturer is between 20% and 26%. d. The Margin of Error for condence interval is 3%. e. We expect that 95% of the bags of chips made by this manufacturer will have between 20% and 26% broken chips. f. 23% Represents a Sample Statistic g. 23% represents a population parameter A student takes a 10 question multiple choice quiz- each question having 4 choices. Suppose a student randomly picks an answer for each question. Find the following. Use the following Desmos Applet and a binomial distribution to answer question https://www.desmos.com/calculator/xwe9ywwjik A) How many ways could student get 2 out of the 10 questions correct? Choose... B) If student got 4 questions correct, what is the percentage student got on test? Choose... C) What is the most likely number of questions that the student will get correct on the exam? Choose... D) What is the chance (as a percentage) that student gets exactly 2 questions correct? Choose... E) What is the chance (as a percentage) that student gets 4 or fewer questions correct? Choose...E) What is the chance (as a percentage) that student gets 4 or fewer questions correct? F) What is the chance (as a percentage) that student gets more than 4 questions correct? G) Would it be considered unusual for student to get more than 4 questions correct on quiz? Choose... Choose... Choose... AA '7 Choose... 94 3 28 92 8 Yes, the chance of getting more than 4 questions correct is less than 5% 2 16 50 6 No, the chance of getting more than 4 questions correct is more than 5% Yes, the chance of getting more than 4 questions correct is less than 10% 96 40 97 45
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