Statistic Cup 2023

Full Name of Statistics Lecturer

• Valentnio Risali

• Valentoni Risali

• Valentino Rizali

• Valentino Risali

The circle graph above shows the distribution of 200,000 physicians by specialty. Which of the following sectors of the circle graph represent more than 40,000 physicians? Select all correct answers

• Pediatrics
• Internal Medicine
• Surgery
• Anesthesiology
• Psychiatry

A reading list for a humanities course consists of 10 books, of which 4 are biographies and the rest are novels. Each student is required to read a selection of 4 books from the list, including 2 or more biographies. How many selections of 4 books satisfy the requirements?

• 90
• 115
• 130
• 144

The mean performance score on a physical fitness test for Division I student-athletes (follow normal distribution) is 947 with a standard deviation of 205. If you select a random sample of 60 of these students, what is the probability the mean is below 900?

• 0.4625
• 0.0375
• 0.5475
• 0.9625

According to the Census Bureau, 3.13 people reside in the typical American household. A sample of 25 households in Arizona retirement communities showed the mean number of residents per household was 2.86 residents. The standard deviation of this sample was 1.20 residents. At the .05 significance level, is it reasonable to conclude the mean number of residents in the retirement community household is less than 3.13 persons? The test statistic and decision are

• -1.125 / H0 is not rejected
• 1.125 / H0 is not rejected
• -1.125 / H0 is rejected
• 1.125 / H0 is rejected

A recent study compared the time spent together by single- and dual-earner couples. According to the records kept by the wives during the study, the mean amount of time spent together watching television among the single-earner couples was 61 minutes per day, with a standard deviation of 15.5 minutes. For the dual-earner couples, the mean number of minutes spent watching television was 48.4 minutes, with a standard deviation of 18.1 minutes. Assume equal variances, At the .01 significance level, can we conclude that the single-earner couples on average spend more time watching television together? There were 15 single-earner and 12 dual-earner couples studied. If it is right one-tailed test, the test statistic is

• 1.449
• -1.949
• -1.449
• 1.949

National hero (navy) who related to KRI MAcan tutul and died in Aru Sea War

• Diponegoro

• Yos Sudarso

• Hassanudin

• R.E. Martadinata

All assumptions for ANOVA, EXCEPT

• populations follow normal distribution

• populations have equal standard deviations

• populations are independent

• populations are dependent

Determine the F value from this ANOVA table

• 9.1625
• 9.6125
• 8.6125
• 9.2561

Use alpha = 0.05, determine the RR

• Reject H0 if F >=3.49

• Reject H0 if F>= 8.74

• Reject H0 if F>=3.29

• Reject H0 if F>= 8.66