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Question: The figure for this exercise is a histogram summarizing the responses given by 137 college women to a question asking how many ear pierces they have (Data source: pennstate2 dataset on the companion website).
a. Describe the shape of the dataset. Explain whether it is symmetric or skewed.
b. Are there any outliers? For any outlier, give a value for the number of ear pierces, and explain why you think the value is an outlier.
c. What number of ear pierces was the most frequently reported value? Roughly, how many women said they have this number of ear pierces?
d. Roughly, how many women said they have four ear pierces?
to test for any significant difference in the number of hours between breakdowns for four machines the following data
Managers of the park decide to survey city residents to see if they believe the playground should be rebuilt. They hand out questionnaires to parents who bring children to the park. Describe possible biases in this sample.
Given a population means IQ =100 and a standard deviation of 16, for a random sample of size 64, what is the probability that the sample mean IQ will be less than 98
What is the probability that Julie is offered at least one of the three jobs?
Colleges typically use grade point average cutoffs to decide who graduates with honors and who is accepted into certain programs (such as teacher education, for example).
Create the acceptance-rejection technique for creating the geometric random variable, X, with parameter p on range {0, 1, 2, ...}.
where T - 50 ms. Design a compensator so that Mpω does not exceed 3.5 dB and ωr is approximately 1.4 rad/s. Predict the overshoot and settling time (with a 2% criterion) of the compensated system when the input is a step. Plot the actual response.
Team Beezus read an average of 26.1 books with a standard deviation of 2.3. There were 23 members on this team. Did the variances of the two teams differ? Use α = 0.05.
What distribution would seem most appropriate to model the TTR data - If your suggested model were valid what proportion of TTR values is likely to exceed the maximum allowable?
The comparison distribution at which the null hypothesis should be rejected, (b) the Z score on the comparison distribution for the sample score, and (c) your conclusion. Assume that all populations are normally distributed.
a. the probability that exactly 20 items will be scanned incorrectly from the next 5,000 items scanned b. the probability that more than 20 items will be scanned incorrectly from the next 5,000 items scanned c. the probability that the number of item..
a manufacturer of semiconductors has a 10 defect rate in the semiconductors produced. every hour fifteen
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