Say, for a different dataset consisting of 15 observations, the corresponding normal probability plot roughly follows a linear trend with slope 7.21 and y-intercept (0, 0.58). What can we say about the distribution of our dataset ? Explain your answer.

The Alpha company takes a survey of the age for all employees. The average age is 35 with a standard deviation of 3.2 years. The results for a normal distribution curve. If the company has 985 workers, how many are over 44 years old?

Where are most of the data gathered in a negatively skewed distribution? Which value is largerthe mean or the median?

Can the measure of central tendency tell  a researcher how spread out the scores are in a distribution?

IF THE VARIANCE OF A POPULATION IS 0.75, THE STANDARD DEVIATION MUST BE?

When you have significant results in data analysis, it is customary to report all relevant means and standard deviations.   True or false

What is the relationship between the standard deviation and variance?

STATISTICS.docx - Google Docs + A docs.google.com/document/d/1Xgqq34HC4kub_OY7HprnxliVKF2wTIZI/edit 2. One wishes to estimate the average age of a student population. It is known that the standard deviation is 2 years. A sample of 50 students is taken and the mean of these students is 23.2 years. What is the point estimate of the population mean? b. Find a 95% confidence interval for the pop. mean. а. 3:26 AM P Type here to search W 36°F Mostly clear * 4) 12/15/2021

The average cost for one year of college is $20,000 with a standard deviation of $2,000. Also, it is known that the costs are normally distributed. What are the minimum and the maximum cost of the middle 95% of college students?