MATH 255N Week 1 Assignment, Variables and Measures of Data – Question and Answers Which of the following best describes the term explanatory variable? Which of the following best describes the term qualitative? A zoologist measures the birthweight of each cub in a litter of lions. What is the level of … measurement of the data? Margaret is investigating if gender has any effect on political party associations. What is the response variable? Timothy is collecting data on number of dental ca...

MATH 225N Week 2 Assignment, Frequency Tables Question and Answers A data set is … 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. Given the frequency table, how many times does the data value 3show up in the data set? A group of students were … about the number of siblings they have. The frequencies and relative frequencie...

MATH 225N Week 6 Confidence Intervals Questions and Answers On a busy Sunday morning, a waitress randomly sampled customers about their preference for morning beverages, Specifically, she wanted to … find out how many people preferred coffee over tea. The proportion of customers that … coffee was 0.42 with a margin of error 0.07. Construct a confidence interval for the proportion of customers that preferred coffee. A company sells juice in 1 quart bottles. In a quality control test, the co...

MATH 225N Week 1 Evidence, Claims, and types Questions and Answers A study is … to research the effects of drinking coffee on hours of sleep. Would an experimental or … observational study design more appropriate? A researcher is … in the effects of watching videos just before bed on the quality of sleep. Which of the following claims would … appropriate for this situation? Select only one answer choice. In a psychological study aimed at testing a medicine for reducing stress levels, th...

MATH 225N Week 2 Assignment, Frequency Tables Question and Answers A data set is … 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. Given the frequency table, how many times does the data value 3show up in the data set? A group of students were … about the number of siblings they have. The frequencies and relative frequencie...

Question: An amateur astronomer is researching statistical properties of known stars using a variety of databases. They collect the absolute magnitude or MV and stellar mass or M⊙ for 30 stars. The absolute magnitude of a star is the intensity of light that would … observed from the star at a distance of 10 parsecs from the star. This is measured in terms of a particular band of the light spectrum, indicated by the subscript letter, which in this case is V for the visual light spectrum. The ...

1. Question. Determine if each of the following represents nominal, ordinal, interval, or ratio data. 2. Question. The following numbers represent the weights in pounds of six 7- year old children in Mrs. Jones’ 2nd grade class…{25, 60, 51, 47, 49, 45}….Find the mean; median; mode; range; variance; standard deviation. 3. Question. If the variance is 846, what is the standard deviation? 4. Question. If we have the following data…34, 38, 22, 21, 29, 37, 40, 41, 22, 20, 49, 47, 20, 31, 3...

MATH 225N Week 6 Questions on Confidence Intervals 1. On a busy Sunday morning, a waitress randomly sampled customers about their preference for morning beverages, Specifically, she wanted to find out how many people preferred coffee over tea. The proportion of customers that preferred coffee was 0.42 with a margin of error 0.07. 2. A company sells juice in 1quart bottles. In a quality control test, the company found the mean volume of juice in a random sample of bottles was X = 31 oun...