Mathematics, 24.10.2019 04:50 joelpimentel
Suppose we take two different random samples from the same population of test scores. the population mean and standard deviation are unknown. the first sample has 25 data values. the second sample has 64 data values. then we construct a 95% confidence interval for each sample to estimate the population mean. which confidence interval would you expect to have greater precision (smaller width) for estimating the population mean? (i) i expect the confidence interval based on the sample of 64 data values to be more precise. (ii) i expect both confidence intervals to have the same precision. (iii) i expect the confidence interval based on the sample of 25 data values to be more precise.
Answers: 3
Mathematics, 21.06.2019 19:30, raytaygirl
Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?
Answers: 2
Mathematics, 21.06.2019 22:10, mairealexander87
Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?
Answers: 1
Suppose we take two different random samples from the same population of test scores. the population...
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