MATH 225-week 5 1. An organization has members who possess IQs in the top 4% of the population. If IQs are normally distributed, with a mean of 100 and a standard deviation of 15, what is the minimum IQ required for admission into the organization? Use Excel, and round your answer to the nearest integer: 126 2. The top 5% of applicants on a test will receive a scholarship. If the test scores are normally distributed with a mean of 600 and a standard distribution of 85, how low can an app...

1. A fitness center claims that the mean amount of time that a person spends at the gym per visit is 33 minutes. Identify the null hypothesis, H0, and the alternative hypothesis, Ha, in terms of the parameter ?. 2. The answer choices below represent different hypothesis tests. Which of the choices are right-tailed tests? Select all correct answers. 3. Find the Type II error given that the null hypothesis, H0, is: a building inspector claims that no more than 15% of structures in the county...

MATH 225N WEEK 2 ASSIGNMENT, FREQUENCY TABLES QUESTION AND ANSWERS 1. A data set is summarized in the frequency table below. Using the table, determine the number of values less than or equal to 5. Give your answer as a single number. For example if you found the number of values was 19, you would enter 19. Value Frequency 3 9 4 4 5 3 6 7 7 6 8 3 9 3 10 5 11 4 ________________________________________ Provide your answer below: 16 2. Given the frequency table, how many times ...

MATH 225N WEEK 7 HYPOTHESIS TESTING QUESTION AND ANSWERS 1. Steve listens to his favorite streaming music service when he works out. He wonders whether the service's algorithm does a good job of finding random songs that he will like more often than not. To test this, he listens to 50 songs chosen by the service at random and finds that he likes 32 of them. Use Excel to test whether Steve will like a randomly selected song more often than not, and then draw a conclusion in the context of the ...

MATH 225N Week 8 Discussion, graded A MATH 225N Week 8 Discussion, Correlation and Regression If a regression analysis was to … completed on body mass index (BMI), what could be an independent variable in that analysis? Why? If we could, what other … independent variables should … included in the analysis? What statistic(s) would show the value of that regression in understanding BMI? Alternatively, find an article that … uses regression analysis to study a medical concern. In that stud...

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Central Limit Theorem for Proportions Week 5 Assignment: 1. A dental student is conducting a study on the number of people who visit their dentist regularly. Of the 520 people surveyed, 312 indicated that they had visited their dentist within the past year. Find the population proportion, as well as the mean and standard deviation of the sampling distribution for samples of size n=60. Correct answers:  10 point 6 0 0 $0.600$0.600  20 point 6 0 0 $0.600$0.600  30 point 0 6 3 ...