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sample final exam - STA 2023 Nishant Patel STATISTICS...

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STA 2023 STATISTICS Sample Final Exam Nishant Patel The Final Exam will contain 25 questions, part multiple choices and part essay type questions. The questions on the Final exam will resemble the ones on this sample exam but some variations must be expected. To study for the final exam students should not limit themselves to these questions only. Identify the data set's level of measurement. 1) the amounts of fat (in grams) in 44 cookies A) ratio B) ordinal C) interval D) nominal Identify the sampling technique used. 2) To ensure customer satisfaction, every 35th phone call received by customer service will be monitored. Provide an appropriate response. 3) Use the histogram below to approximate the median heart rate of adults in the gym. 4) Find the sample standard deviation. 22 29 21 24 27 28 25 36 5) A competency test has scores with a mean of 82 and a standard deviation of 2. A histogram of the data shows that the distribution is normal. Between what two values do about 99.7% of the values lie? A) Between 80 and 84 B) Between 76 and 88 C) Between 78 and 86 D) Between 74 and 90 6) SAT verbal scores are normally distributed with a mean of 426 and a standard deviation of 94. Use the Empirical Rule to determine what percent of the scores lie between 332 and 426.
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7) The cholesterol levels (in milligrams per deciliter) of 30 adults are listed below. Find the interquartile range for the cholesterol level of the 30 adults. Approximate the mean of the grouped data. 8) A) 150 B) 10 C) 148 D) 146 Provide an appropriate response. 9) A group of students were asked if they carry a credit card. The responses are listed in the table. If a student is selected at random, find the probability that he or she is a sophomore given that the student owns a credit card. Round your answers to three decimal places.
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