MATH 302 (MATH302)
American Public University
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Examen
MATH 302 Week 3 Test | Score 20/20 | American Public University
MATH 302 Week 3 Test | Score 20/20 | American Public University
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Examen
2024 PASSED EXAM MATH 302 Week 8 Test American Public University
2024 PASSED EXAM MATH 302 Week 8 Test American Public University
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MATH302 Week 5 Discussion Confidence Intervals and Sample Size APU
Using the data set you collected in Week 1, excluding the super car outlier, you should have calculated the mean and standard deviation during Week 2 for price data. Along with finding a p and q from Week 3. Using this information, calculate two 95% confidence intervals. For the first interval you need to calculate a T-confidence interval for the sample population. You have the mean, standard deviation and the sample size, all you have left to find is the T-critical value and you can calculate ...
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MATH302 Week 5 Knowledge Check Homework Practice Questions APU
1. Question: Suppose a marketing company wants to determine the current proportion of customers who click on ads on their smartphones. It was estimated that the current proportion of customers who click on ads on their smartphones is 0.68. How many customers should the company survey in order to be 97% confident that the margin of error is 0.29 for the confidence interval of true proportion of customers who click on ads on their smartphones? 2. Question: There is no prior information about the ...
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MATH302 Week 5 Test 5 Critique APU
Math302 Week 5 Test Critique Test 5 was challenging and really tested our knowledge of this week’s lessons. I took the test twice and was able to do better on my second attempt. In reviewing the test to see where I missed the 100% mark, I see that my response to question #18 was incorrect, in looking at this multiple times, I do not recognize an error. The grading feedback is not helpful as I correctly answered the question:
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MATH302 Week 5 Test APU 20 Q's and A's
1. Question: The population standard deviation for the height of college football players is 2.7 inches. If we want to estimate a 95% confidence interval for the population mean height of these players with a 0.65 margin of error, how many randomly selected players must be surveyed? 2. Question: The population standard deviation for the height of college basketball players is 2.9 inches. If we want to estimate a 99% confidence interval for the population mean height of these players with a 0.45...
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MATH302 Week 4 Test - 20 Questions and Answers APU
1. Question: A dishwasher has a mean life of 11.5 years with an estimated standard deviation of 1.5 years ("Appliance life expectancy," 2013). Assume the life of a dishwasher is normally distributed. Find the number of years that the bottom 10% of dishwasher would last. Round answer to 2 decimal places. 2. Question: The size of fish is very important to commercial fishing. A study conducted in 2012 found the length of Atlantic cod caught in nets in Karlskrona to have a mean of 47.8 cm and a s...
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MATH302 Week 4 Test 4 Critique
MATH302 Week 4 Test 4 Critique
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MATH302 Week 4 Knowledge Check Homework Practice Questions APU
1. Question: Find the area under the standard normal distribution to the left of z = -1.05. Round answer to 4 decimal places. 2. Question: Arm span is the physical measurement of the length of an individual's arms from fingertip to fingertip. A man's arm span is approximately normally distributed with mean of 70 inches with a standard deviation of 4.5 inches. Find length in inches of the 99th percentile for a man's arm span. Round answer to 2 decimal places. 3. Question: Find P(-1.96 ≤ Z ≤...
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MATH302 Week 4 Discussion The normal distribution I and II APU
W4: The normal distribution I and II Recall the car data set you identified in Week 2. We know that this data set is normally distributed using the mean and SD you calculated. (Be sure you use the numbers without the supercar outlier)
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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.
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MATH302 Week 3 Knowledge Check Homework Practice Questions
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...
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MATH302 Week 3 Test 3 Critique
MATH302 Week 3 Test 3 Critique
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MATH302 Week 3 Test - 20 Questions and Answers APU
1. Question: A coin is flipped 30 times. What is the probability of getting 15 or more heads? Round answer to 4 decimal places. 2. Question: It is known that 50% of adult workers have a high school diploma. If a random sample of 8 adult workers is selected, what is the probability that less than 6 of them have a high school diploma? 3. Question: If random variable X has a binomial distribution with n=9 and P(success) =p= 0.4, find the standard deviation of X. 4. Question: If random variable X...
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MATH302 Week 2 Knowledge Check Homework Practice Questions
1. Question: What was the sampling method that was used 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. 2. Question: What kind of data is "the colors of the houses around the park" in the scenario? ...
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MATH302 Week 2 Test 2 Critique APU
MATH302 Week 2 Test 2 Critique APU
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MATH302 Week 2 Test Questions and Answers APU
1. Question: An instructor wants to compare spread (variation) of final grades of students in her online class and face-to-face class. The instructor selects 10 students randomly from each class and the following table shows the final grades of those students. See Attached Excel for Data. 2. Question: The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Tasman Sea are listed below. Find the variance. See Attached Excel for Data. Use the Excel function to fin...
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MATH302 Week 1 Knowledge Check Homework Practice Questions APU
1. Question: A group of test subjects is divided into twelve groups; then four of the groups are chosen at random. What type of sampling is used? 2. Question: The first 50 people who walk into a sporting event are polled on their television preferences. What type of sampling was used? 3. Question: What is the sampling method used in the following scenario? The marketing manager for an electronics chain store wants information about the ages of its customers. Over the next two weeks, at each st...
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MATH302 Week 1 Discussion Introductions and Collecting Data APU
MATH302 Week 1 Discussion Introductions and Collecting Data APU
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MATH302 Week 1 Test 1 Critique APU
MATH302 Week 1 Test 1 Critique APU
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