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Please solve the exercise below in Excel and show your work (and formulas)
In the past, of all the students enrolled in "Basic Business Statistics" 10% earned A's 20% earned B's, 30% earned C's, 20% earned D's and the rest either failed or withdrew from the course. Dr Johnson is a new professor teaching "Basic Business Statistics" for the first time this semester.
At the conclusion of the semester, in Dr. Johnson's class of 60 students, there were 10 A's, 20 B's, 20 C's, 5 D's and 5 W's or F's. Assume that Dr. Johnson's class constitutes a random sample. Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution.
Use α = 0.05 and 0.01 and perform a goodness of fit test.
In both cases, give a number of data points, n, and a correlation coefficient, r. Draw a number of data points, n, and a correlation coefficient, r. Tell whether the correlation is significant at 0.05 or 0.01 level, explain.
The amount of time the university professors devote to their jobs per week is normally distributed with a mean of 52 hours and a standard deviation of 6 hours.
Assuming that the process is operating correctly according to specifications, what is the probability that a sample will indicate that an adjustment is needed?
Perform the five-step hypothesis test on the data. - LORA - this is the portion I am responsible for based on using the nonparametric hypothesis testing.
Can we conclude that car size is dependent on marital status? YES or NO (circle one)
Based on the information provided, which set of variables provided the best predictor of the spring fox population?
What is the difference between dependent and independent samples? Discuss differences is statistical treatment, statistical power, and data management.
Need help discussing Regression Analysis and Bulgaria. I am conducting a country analysis and need to discuss this. Please cite any references used.
Generate a 95% confidence interval for the true mean total cholesterol levels in children.
Draw the distribution of the random variable X, representing her time of arrival. (Be sure to include labels and values on the axes.)
A marketing research analyst collects data for a random sample of 100 customers out of the 400 who purchased a particular "coupon special".
Find out equation of the line of best fit. Find out r - Is there a strong relationship?
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