Asurvey of nonprofit organizations showed that online fundraising has increased in the past year. based on a random sample of 50 nonprofits, the mean one-time gift donation in the past year was $35, with a standard deviation of $8. complete parts a and b below. a. construct a 95% confidence interval estimate for the population one-time gift donationb. interpret the interval constructed in (a). choose the correct answer below. i. the quality improvement team cab be completely sure that the new population mean turnaround the time is contained within the confidence interval. ii. the quality improvement team cab be completely sure that the new population mean turnaround the time is midpoint of the confidence interval. iii. the quality improvement team cab be 95% confident that the new population mean turnaround the time is contained within the confidence interval. iv. the quality improvement team cab be 95% confident that the new population mean turnaround the time is contained within the confidence interval.

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.

step-by-step explanation:

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.

answer: idk wbu

step-by-step explanation: umm..