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Question
Do problem at the end of the text book. There are two sets of test scores titled Part 1 and Part 2. The first three columns are the scores for Part 1 or Computer test scores out of a max score of 50. The last three columns are the scores for part 2 or the written test scores, out of a max score of 100. Make sure you label all the solutions in a spreadsheet so they are easy to find. Save this on the worksheet called Part 1 in a file titled HW7.xls.
For part a you are able to use the built in functions, but you must also use sum and count command to solve the mean and standard deviation equations.
For parts B-D use the built in histogram function and also use the countif or countifs command to count values in each bin. So you must have two plots for each part.
Distributed with a mean of 30 minutes and a standard deviation of 8 minutes. What is the probability that a randomly selected individual will have a waiting time between 15 and 45 minutes.
Cite an example of how you could/would apply a test of a hypothesis for a single population proportion, two tail test described in the lecture to real world situations?
No children that is equal to the value obtained by the census. Give the z statistic (rounded to two decimal places) and the P-value. What do you conclude?
Suppose a social worker is involved in a study about family structure. She obtains information regarding the number of children per family in a certain community from the census data. What is the random variable of interest? Is the random variable..
Is there evidence to suggest that the process average differs from the target value?
What is the probability a random sample of 90 test takers will provide a sample mean test score within 10 points of the population mean of 502 on the Critical Reading part of the test (to 4 decimals)?
Mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be σ = 3.6 hours. Based on this information, what would be the point estimate for μ?
How should I compute probability in spss for variable "seizure duration" with unnormal distribution which constitutes numerical data of duration in seconds.
Here are the shopping times (in minutes) for a sample of shoppers at a particular shoe store: 25, 38, 34, 41, 37 and find the standard deviation of this sample of shopping times. Round your answer to at least two decimal places.
Explain what an outlier is. Then, if there are any outliers in the Project 1 Data Set, what are they? If there are no outliers, say no outliers.
Critically discuss why you would or would not expect each of the following variables to be normally distributed.
Is there sufficient evidence at the 0.05 level of significance to conclude that the proportion of women physicians at the university health system exceeds 27.9%?
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