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Ages of Pennies We collected 50 pennies and recorded their ages, by calculating AGE = CURRENT YEAR = YEAR ON PENNY.
5
1
9
2
20
0
25
17
4
3
8
28
21
19
16
22
10
36
23
6
b. Draw a relative frequency histogram to describe the distribution of penny ages. How would you describe the shape of the distribution?
What results in your departments seem to be correlated or related to other activities? How could you verify this? Create a null and alternate hypothesis for one of these issues. What are the managerial implications of a correlation between these v..
in a sample of 1000 people 540 are in favor of candidate a and the rest are in favor of candidate b. find the 95
the 70-year long-term record for weather shows that for new york state the annual precipitation has a mean of 39.99
The state highway department is studying traffic patterns on one of the busiest highways in the state. As part of the study, the department needs to estimate the average number of vehicles that pass an intersection each day. A random sample of 64 ..
if the conditions of a survey sample satisfy those required by the central limit theorem then there is a 95 probability
Explain the difference between the null hypothesis and the alternate hypothesis. How is the null hypothesis chosen (why is it null)? What is the importance of rejecting the null hypothesis in relation of the sample to the population?
What type of situation would I be able to understand how to use regression as a key driver as an influence in sales or other outcomes?
the city council of pine bluffs is considering increasing the number of police in an effort to reduce crime. before
If in fact the true mean score of all students taking the preparatory course is 522, which of the following statements is true about our hypothesis test?
a turbine blade has demonstrated a weibull failure pattern with a decreasing failure rate characterized by a shape
For following set of scores, prepare a frequency distribution, a histogram, and a stem-and-leaf display for each variable. Also calculate the mean, the median and the standard deviation of each score.
A random sample of 15 paired observations has a correlation of -.46. Can we conclude that the correlation in the population is less than zero? Use the .05 significance level.
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