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The heights of randomly selected residents in a college dorm in inches are listed.
67 69 69 71 59 58 67
From this data set, find the sample mean, median, mode and range for the given heights. Round each to the nearest tenth if necessary. Include units with each answer.
Which of the numbers you calculated is a better measure of the central tendency of the heights given? Give a specific statistical reason for your conclusion.
Select another sample of 30 scores from the same population, what measure of central tendency is likely to vary least between your first and second sample?
A certain researcher thinks that the proportion of women who say that female bosses are harshly critical is greater than the proportion of men.
A recent study claimed that 15% of all eighth- grade students are overweight. In a sample of 80 students, 9 were found to be overweight. At a= 0.01, is there enough evidence to reject the claim using critical values?
Which measures of central tendency will always have but one (1) value for a set data?
Annual family dental expenses for the families of a random sample of ten employees of a company are given below. You can assume the family dental expenses for the employees of the company are normally distributed.
If 20 students in the class said they frequently experience stress in their daily lives, would you be surprised? Explain and use statistics to support your answer
Test the hypothesis that the annual incomes of corporate trainers in areas of more than 500,000 are significantly more than those in areas of less than 100,000.
Thirty homes responded, and the sample mean water use per day was 77 gallons with a standard deviation of 9.0 gallons per day.
The company can alter the standard deviation. Use a sketch to decide how the company can proceed if they want to reduce this proportion by changing the standard deviation.
Which one/s of these factors (independent variables) will have a negative correlation with bone density and which one/s will have a positive correlation?
In this continuous production process, the amount of toothpaste put in a tube is normally distributed with a mean of 8.17 ounces and a standard deviation of 0.12 ounces. If the actual capacity of the tubes used is 8.49 ounces, what proportion of t..
Plot CEO salaries against the net profit of their respective companies, do you expect to find a linear correlation between the two?
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