Sketch a typical sample function for this process
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- An accountant believes that the percentage of accounts that will be uncollectible increases as the ages of the accounts increase. Here the age of an unpaid account is the number of days elapsed since the invoice date. To test this theory, the accountant randomly selects independent samples of 500 accounts with ages between 31 & 60 days and 500 accounts with ages between 61 & 90 days from the accounts receivable ledger dated one year ago. When the sampled accounts are examined, it is found that 10 of the 500 accounts with ages between 31 & 60 days were eventually classified as "uncollectible", while 27 of the 500 accounts with ages between 61 & 90 days were eventually classified as "uncollectible". Let pi = proportion of accounts with ages between 31 & 60 days and p2 = proportion of accounts with ages between 61 & 90 days.What sampling designyou can suggest for this for this research title? Species Diversity of House-dwelling lizards in Cagayan De Oro Citygive a broad conclusion about learning sampling technique and its importance.
- Discuss the assumptions for one-sampled t-test and why they are important.Simple random sampling uses a sample of size n from a populaiton of size N to obtain data that can be used to make inferences about the characteristics of a population. Suppose that, from a population of 50 bank accounts, we want to take a random sample of four accounts in order to learn about the population. how many different random samples of four accounts are possible? Show steps in Excelthe central limit theorem informs the numerator of the z- score for the sample means equation. true or false?
- A biologist wants to determine if different temperatures (15oC, 25oC, or 35oC) and amounts of sunlight (partial or full) will affect the growth of plants. He will test each combination of temperature and sunlight by randomly assigning 15 plants to each of the combinations. What type of sampling is described in this study? one sample paired data two samples more than two samplesapter 10) Post-Class A consumer advocate researches the length of life between two brands of refrigerators, Brand A and Brand B. He colle (measured in years) on the longevity of 40 refrigerators for Brand A and repeats the sampling for Brand B. These data in years. (You may find it useful to reference the appropriate table: z table or t table) Brand A Brand B Brand A Brand B 17 16 23 24 18 22 14 16 14 24 17 18 19 18 20 22 19 19 22 18 24 19 14 12 14 16 22 23 22 18 24 21 23 19 12 20 19 13 18 15 13 23 17' 19 15 23 16 16 21 16 14 19 12 21 22 14 21 24 24 12 P 15 12 12 20 15 16 12 19 24 21 20 20 13 15 19 21 14 20 14 Click here for the Excel Data File Saved Assume that μ₁ is the mean longevity for Brand A and 2 is the mean longevity for Brand B. a. Select the competing hypotheses to test whether the average length of life differs between the two brands. O He: H1 - H₂ = 0; HA: M1 - µ2 * 0Let p be the population proportion for the following condition. Find the point estimates for p and q. Of 952 children surveyed, 108 plan to join the armed forces in the future. Part 1 The point estimate for p, p^, is ___ The point estimate for? q,q^, is ___
- 1On each trial of an experiment, a participant is presented with a constant soft noise, which is interrupted at some unpredictable time by a slightly louder sound. The time it takes for the participant to react to the louder sound is recorded. The following list contains the reaction times (in milliseconds) for 7 trials of this experiment. 541, 800, 667, 362, 542, 667, 800 Send data to calculator (a) What is the median of this data set? If your answer is not an integer, round your answer to one decimal place. 1 2 (b) What is the mean of this data set? If your answer is not an integer, round your answer to one decimal place. (c) How many modes does the data set have, and what are their values? Indicate the number of modes by clicking in the appropriate circle, and then indicate the value(s) of the mode(s), if applicable. zero modes one mode: 0 O two modes: and ?The graphs show a violation of the assumption of (check all that apply) normality homogeneity of variance
