Math 302 week 3 - Study guides, Class notes & Summaries

1. Question: Suppose a random variable, x, arises from a binomial experiment. If n = 14, and p = 0.13, find the standard deviation. Round answer to 4 decimal places. 2. Question: A coin is flipped 30 times. Find σ². Round to 1 decimal place. 3. Question: It is known that 50% of adult workers have a high school diploma. If a random sample of 6 adult workers is selected, what is the probability that 3 or more of them have a high school diploma? 4. Question: Suppose a random variable, x, arise...

MATH 302| STATISTICS| WEEK 1 QUIZ| 2024| Question 1 1 / 1 point Duration (amount of time) is what type of data in the scenario? A study was done to determine the age, the number of times per week, and the duration (amount of time) of residents using a local park in San Antonio, Texas. The first house in the neighborhood around the park was selected randomly, and then the resident of every eighth house in the neighborhood around the park was interviewed. Question 2 Qualitative Quantit...

MATH 302| STATISTICS| WEEK 5 QUIZ WITH ANSWERS| 2024 Question 1 1 / 1 point The population standard deviation for the height of college baseball players is 3.0 inches. If we want to estimate 95% confidence interval for the population mean height of these players with a 0.68 margin of error, how many randomly selected players must be surveyed? (Round up your answer to nearest whole number, do not include any decimals) Answer: 75 Hide Feedback Z-Critical Value = NORM.S.INV(.975) = 1.96 n = 32...

MATH 302 EXAM QUESTIONS AND CORRECT ANSWERS GRADE A+ GUARANTEED PASS. What is the sampling method used in the following scenario? The librarian at a public library wants to determine what proportion of the library users are children. The librarian has a tally sheet on which she marks whether books are checked out by an adult or a child. She records this data for every fourth patron who checks out books. A. systematic B. cluster C. convenience D. stratified E. simple random Answer ...

MATH 302 TEST 1 EXAM QUESTIONS AND CORRECT ANSWERS. Part 1 of 5 - Section: Data & Sampling 4.0/ 5.0 Points Question 1 of 20 1.0/ 1.0 Points “Number of times per week” is what type of data in the scenario? A study was done to determine the age, the number of times per week, and the duration (amount of time) of residents using a local gym in San Antonio, Texas. The first car in the parking lot was selected randomly, and then the resident of every eighth car in the lot around the gym was...

MATH 302 TEST 1 EXAM QUESTIONS AND CORRECT ANSWERS. An Excel generates 200 random numbers, and 200 people whose names correspond with the numbers on the list are chosen. What type of sampling was used?  A. Convenience  B. Systematic  C. Simple Random  D. Stratified  E. Cluster Answer Key: C Question 2 of 20 1.0/ 1.0 Points What is the sampling method used in the following scenario? A woman in at a daycare is handing out questionnaires to parents asking them to eva...

MATH 302| STATISTICS| WEEK 3 QUIZ WITH ANSWER KEY| 2024 If random variable X has a binomial distribution with n =10 and P(success) =p =0.2, find the probability that X is less than 6. (That is, find P(X<6) Answer: (round to 4 decimal places) Answer Key:0.9936|.9936 P(x < 6) = P(x is less than or equal to 5), in Excel =BINOM.DIST(5,10,0.2,TRUE) Approximately 8% of all people have blue eyes. Out of a random sample of 20 people, what is the probability that at most 2 of them have blue ey...

MATH 302 TEST 1 EXAM QUESTIONS AND CORRECT ANSWERS. An Excel generates 200 random numbers, and 200 people whose names correspond with the numbers on the list are chosen. What type of sampling was used?  A. Convenience  B. Systematic  C. Simple Random  D. Stratified  E. Cluster Answer Key: C Question 2 of 20 1.0/ 1.0 Points What is the sampling method used in the following scenario? A woman in at a daycare is handing out questionnaires to parents asking them to eva...

MATH302 Week 3 Discussion; Probability and counting rules; Discrete probability distributions

W3: Probability and counting rules; Discrete probability distributions Recall the car data set you identified in Week 2. You will want to calculate the average for your data set. (Be sure you use the numbers without the supercar outlier) Once you have the average count how many of your data points fall below the average. You will take that number and divide it by 10. This will be your p or "success" in your problem. Once you have p, calculate q. If you were to find another random sample of...