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Which of the following statements about the sampling distribution of the sample mean, x-bar, is not true?
The distribution is normal regardless of the shape of the population distribution, as long as the sample size, n, is large enough.
The distribution is normal regardless of the sample size, as long as the population distribution is normal.
The distribution's mean is the same as the population mean.
The distribution's standard deviation is smaller than the population standard deviation.
All of the above statements are correct.
Two different simple random samples are drawn from two different populations. The first sample consists of 20 people, with 10 having a common attribute.
A pH level of the soil between 5.3 and 6.5 is optimal for strawberries. To measure the pH level, a field is divided into two lots. In each lot, we randomly select 20 samples of soil.
A survey of 300 union members in New York reveals that 112 favor the Republican candidate for governor. Construct the 98% confidence interval for the true population proportion of all New York State union members who favor the Republican candidate..
Professor Jennings claims that only 35% of the students at Flora College work while attending school. The dean thinks that the prof. has underestimated the number of students with part-time or full-time jobs.
X2 is college board score (range 200-800). Use the multiple regression equation to predict college gpa for a high school gpa of 3.6 and a college board score of 600.
Does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? Let p1 refer to the urban population.
Forecast the number of deliveries utilizing exponential smoothing constant for different values also compare it. A hospital records the number of floral deliveries its patients receive every day.
Heights are sampled of kids from three schools. Using a 0.05 significance level, if when looking at ANOVA results, your p-value is 0.04, what can you say about your sample data? no minimum word count.
a machine produces parts with lengths that are normally distributed with ? 0.55. a sample of 10 parts has a mean
Test this problem at 99% confidence and provide conclusion. Would the problem have a similar conclusion if we knew the population standard deviation was $40,000? Why?
let fxyxy 45x3ye-x-2y if xgt0 ygt0 be the joint distributiton of xy. find the correlation
motorola obtains cell phones from its contract manufacturer located in china to serve u.s. market. the u.s. is served
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