The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample ofn=61,find the probability of a sample mean being less than19.5if...
Apples of a popular brand called "Yarok" are automatically sorted by a special device which controls their size and eliminates those with surface defects. The population in our case is the totality of weight measurements of the daily batch of apples sorted by the device. The experiment consists...
如果人口的平均数是11，而标准偏差是1.5. 那么找出落在平均值5个偏差以内的值的间隔。用开区间表示法表达出你的答案。
Statistics such as averages or means andstandard deviationsare referred to as population parameters when they're taken from populations. Many such as a population's mean and standard deviation are represented by Greek letters like µ (mu) and σ (sigma). These statistics are inferential in nat...
for the process standard deviation, specify the tests for special causes, and display [...] minitab.com 例如,可以定义对过程 标准差的估计 方法,指定特殊原因的检验,以及通过定义历史阶段来显示过程 阶段。 minitab.com[...] Territories West to Hong Kong Island in order to narrow the popul...
population deviation 【化】 总体偏差 deviation standard 偏差标准 standard deviation 标准差,标准离差,标准偏差,标准偏移,标准误差,中误差,平均误差 standard population 标准人口 combined standard deviation 合并标准差 effective standard deviation 有效标准偏差 label standard deviation 标准差标记 mean stand...
题目 A population has a mean of 20,000 and a standard deviation of 1,000. Samples of size n = 2,500 are taken from this population. What is the standard error of the sample mean? A. 20.00. B. 0.04. C. 400.00. 相关知识点: 试题来源: 解析 A 略 反馈 收藏 ...
A population has mean 31 and standard deviation 7, what is the data value that has a z-score of -2? For a population with a mean of 20 and a standard deviation of 4.3, what is the z-score for a value of 21.2? For a population with a mean of ...
Answer to: If a population has a mean of 198 and a standard deviation of 20, calculate the raw score (X) for a z-score of Z = 0.56 from this...
问一道统计学问题:英文Suppose a population has a mean of 90 and a standard deviation of 28.If a random sample of size 49 is drawn from the population,the probability of drawing a sample with a mean of more than 95 is ___ .Select one: