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Elementary Statistics (STATs 2023)Midterm Exam review Questions and Answers $14.99   Add to cart

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Elementary Statistics (STATs 2023)Midterm Exam review Questions and Answers

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Elementary Statistics (STATs 2023)

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  • September 7, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
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1..A polling organization contacts 2703 female university graduates who have a white collar job
and asks whether or not they had received a raise at work during the past 6 months

What is the population in the study?
A. Female university graduates.
B. Female university graduates who have a white collar job.
C. Female university graduates who have received a raise at work.
D. Female university graduates who have a white collar job and have received a raise at work.

What is the sample in the study?
A. Female university graduates.
B. Female university graduates who have a white collar job.
C. The 2703 female university graduates who have a white collar job.
D. The 2703 female university graduates who have received a raise at work.

2. A doctor gives a patient a 90% chance of surviving bypass surgery after a heart attack. If the patient
survives the surgery, then the patient has a 55% chance that the heart damage will heal. Find the
probability that the patient survives the surgery and the heart damage heals.

The probability is 0.495 . (Type an integer or a decimal.)

3. Determine whether the approximate shape of the distribution in the histogram is symmetric, uniform,
skewed left, skewed right, or none of these.




Choose the best answer below.
A. Skewed right
B. Skewed left
C. Symmetric
D. Uniform
E. None of these


4. In a poll,1004 adults in a country were asked whether they favor or oppose the use of "federal tax
dollars to fund medical research using stem cells obtained from human embryos." Among the
respondents, 48% said that they were in favor. Describe the statistical study.

What is the population in the given problem? Choose the correct answer below.
A. The 1,004 adults selected
B. 48% of the 1,004 adults selected
C. All adults in the country
D. 48% of all adults in the country

Identify the sample for the given problem. Choose the correct answer below.
A. 48% of the 1,004 adults selected
B. The 1,004 adults selected
C. All adults in the country
D. 48% of all adults in the country




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