Applications | RapidIdentity x _ Quizzes 2 * *Course Hero X + X - > C A learn.vocs.edu/courses/500264/external_tools/retrieve?display=full_width&url=https%3A%2F%2Fvccs.quiz-Iti-iad-prod.instructure.com%2FIti%2Flaunch%3Fmodule_session%... [ * [ @ G Return Submit 8 3 points Exam Data Set 3 contains magnitudes (on the Richter Scale) of a random sample of 50 recent observed earthquakes. Find the mean and standard deviation of this sample, then use those sample statistics and the Empirical Rule to determine the upper and lower bounds on significance. (Round your calculations to three decimal places; add trailing zeros as needed. Note: if your calculations result in a negative number, enter 0.000.) The mean Richter Scale reading is type your answer.. The standard deviation of the Richter Scale readings is type your answer. E 35 1 All earthquake magnitudes less than or equal to type your answer.. are significantly low. All earthquake magnitudes greater than or equal to 2 type your answer.. are significantly high. 4 9 2 points 5 Fourteen different second-year medical students measured the blood pressure of the same patient. Exam Data Set 4 contains the 14 systolic readings (in mm Hg). Find the 5-number summary and the interquartile range. (Type the values exactly as they appear in the StatCrunch output; do not round. List the numbers in ascending order from left 6 to right.) The 5-number summary is type your answer... type your answer... type your answer... type your answer... and 8 type your answer... The interquartile range is type your answer. 10 10 0.5 points 11 Using Exam Data Set 4, construct a modified box plot. Which of the following four statements is most correct? 12 O The lowest data value is an outlier. The highest three data values are outliers. 13 O There are no outliers; there is no difference between the modified box plot and a regular box plot of the same data. 14 The lowest two and highest two data values are all outliers. 15 11 1 point Type here to search Market +0.57% ~ DO * 11:21 AM 10/11/2022 19Applications | RapidIdentity x _ Quizzes 2 * *Course Hero X + X - > C A learn.vccs.edu/courses/500264/external_tools/retrieve?display=full_width&url=https%3A%2F%2Fvccs.quiz-Iti-iad-prod.instructure.com%2FIti%2Flaunch%3Fmodule_session%... [ * [ @ G Return Submit 11 1 point In a survey of consumers age 12 and older, respondents were asked how many cell phones were in used by their household. (No two respondents were from the same household.) Among the respondents, 215 answered "none", 280 said "one", 266 said "two", 136 said "three", and 121 responded with "four or more." If a survey respondent is selected at random, what is the probability that their household has four or more cell phones in use? (Round your answer to three decimal places; add trailing zeros as needed.) 898 P(four or more phones) = type your answer. 1 2 12 1 point The table below describes the smoking habits of a group of asthma sufferers. If one of the 1,156 patients is randomly selected, what is the probability that that patient is either a heavy smoker or male? (Round your answer to three decimal places; add trailing zeros as needed.) 4 Asthma Patients by Gender and Habit Level Gender Nonsmoker Occasional Regular 5 Smoker Smoker Heavy Smoker Male 43 50 71 49 6 Female 382 48 86 39 7 8 P(heavy smoker OR male) = type your answer. 10 13 1 point 11 Hospitals typically require backup generators to provide electricity in the event of a power outage. A certain hospital has two backup generators, so that power is still available if one of them fails during a power outage. These generators operate independently, so that if one backup fails, the failure will not affect the operation of the other generator. Assume that 12 both emergency backup generators are the same make and model, which is known to fail 21% of the times when they are needed. What is the probability that both generators will fail during a power outage? (Round your answer to three decimal places; add trailing zeros as needed.) 13 The probability that both generators will fail during a power outage is type your answer... 14 15 - 14 1 point Type here to search E Market +0.57% ~ 0 0 7 4x 11:21 AM 10/11/2022 19Applications | RapidIdentity x _ Quizzes 2 * *Course Hero X + X - > C A learn.vccs.edu/courses/500264/external_tools/retrieve?display=full_width&url=https%3A%2F%2Fvccs.quiz-Iti-iad-prod.instructure.com%2FIti%2Flaunch%3Fmodule_session%... [ * [ @ G Return Submit O 14 1 point The table below describes results from random selection of eight live births from eight different sets of parents. The random variable x represents the number of girls among the eight live births. Is 6 a significantly high number of girls out of 8 live births? Probability Distribution of Girls in x Live Births X P(x) 1 0 0.004 .008 2 2 0.10 3 .251 4 0.266 5 4 0.251 6 0.104 U 0.008 0.004 6 O Yes; since P(x 2 6) is greater than 0.025, 6 is a significantly high number of girls in 8 live births. 7 No; since P(x 2 6) is greater than 0.025, 6 is not a significantly high number of girls in 8 live births. 8 O Yes; since P(x 2 6) is less than 0.025, 6 is a significantly high number of girls in 8 live births. 9 No; since P(x 2 6) is less than 0.025, 6 is not a significantly high number of girls in 8 live births. 10 15 1 point 11 Suppose a single die is rolled 26 times and the numbers that are rolled are recorded. Also, suppose that the random variable x is the number of dots displayed on the top surface of the die after each roll. Does x have a binomial distribution? 12 O Not binomial; there are more than two possible outcomes for each trial. 13 Not binomial; the individual trials are not independent. Not binomial; there are too many trials. 14 The random variable x has a binomial distribution. 15 - Type here to search E Market +0.57% ~ DO ( 4x 11:22 AM 10/11/2022 19Applications | RapidIdentity x _ Quizzes 2 * *Course Hero X + X C A learn.vccs.edu/courses/500264/external_tools/retrieve?display=full_width&url=https%3A%2F%2Fvccs.quiz-Iti-iad-prod.instructure.com%2Flti%2Flaunch%3Fmodule_session%... [ * @ G Return Submit O 16 1 point According to a recent survey, 55% of adults with smartphones say they use them in meetings or classes. If 10 adults with smartphones are randomly selected, what is the probability that at least 3 of them use their smartphone in meetings or classes? (Round your answer to three decimal places; add trailing zeros as needed.) P(3 or more) = type your answer.. 88 8 E 35 1 17 1 point A survey showed that 71% of adults need some form of vision correction (eyeglasses, contacts, surgery, etc.). Suppose 9 adults are randomly selected, and 8 of them turn out to 2 need some form of vision correction. Is 8 a significantly high number of adults who need vision correction out of 9 randomly selected adults? O Yes; since P(x 2 8) is less than 0.025, 8 is a significantly high number of adults needing vision correction. Yes; since P(x 2 8) is greater than 0.025, 8 is a significantly high number of adults needing vision correction. 4 O No; since P(x 2 8) is greater than 0.025, 8 is not a significantly high number of adults needing vision correction. 5 No; since P(x 2 8) is less than 0.025, 8 is not a significantly high number of adults needing vision correction. 6 18 1 point When purchasing bulk orders of batteries, a toy manufacturer uses this acceptance sampling plan: randomly select and test 46 batteries and determine whether each is within specifications. The entire shipment will be accepted if at most 2 of the batteries do not meet specifications. Suppose a certain shipment contains 7,000 batteries, and 2% of them do 8 not meet specifications. What is the probability that this entire shipment of 7,000 batteries will be accepted? (Round your answer to three decimal places; add trailing zeros as needed.) 9 P(the entire shipment will be accepted) = type your answer.. 10 11 19 1 point 12 Suppose IQ scores are normally distributed with a mean u = 100 and a standard deviation o = 15. Use the formula for computing a z-score (z = (x-u)/o) to find x, the IQ score that has a z-score of 2.33. Round your answer to the nearest whole number. 13 135 14 -65 100 15 O -7 Type here to search 62"F Sunny 11:22 AM 10/11/2022 19Applications | RapidIdentity x _ Quizzes 2 * *Course Hero X + X - > C A learn.vccs.edu/courses/500264/external_tools/retrieve?display=full_width&url=https%3%2F%2Fvccs.quiz-Iti-iad-prod.instructure.com%2Flti%2Flaunch%3Fmodule_session%... [ * @ G Return Submit O -7 20 1 point A certain company manufactures precision thermometers that are supposed to give readings of 0.00 C at the freezing point of water. Tests on a large sample of these thermometers reveal that some give readings above 0.00' C and some give readings below 0.00' C. Suppose thermometer readings are approximately normally distributed with mean thermometer 0.00 C with a standard deviation of 1.00. What is the thermometer reading that separates the top 4% of readings from the rest? (Round your answer to two decimal 898 places; add trailing zeros as needed.) 1 The thermometer reading that separates the top 4% of readings from the rest is |type your answer.. . C. 2 21 1 point Assume that the red blood cell counts of women are approximately normally distributed with a mean of 4.577 million cells per microliter and a standard deviation of 0.382 million cells per microliter. Approximately what percentage of women have red blood cell counts in the normal range from 4.2 to 5.4 million cells per microliter? (Enter your answer as a 5 percentage rounded to one decimal place; add a trailing zero as needed.) 6 The percentage of women who have red blood cell counts in the normal range from 4.2 to 5.4 million cells per microliter is type your answer.. percent. 8 22 1 point Before every flight, a pilot must verify that the total weight of the load aboard their aircraft is less than the maximum allowable load for that type of aircraft. Suppose a commercial aircraft can carry 39 passengers, and a flight has fuel and baggage that allows for a total passenger load of 6,513 lb. Suppose the pilot sees that the plane is full and all passengers are adult men. The aircraft will be overloaded if the mean weight of the passengers is greater than 6,513 lb/39 passengers = 167 lb/passenger. Assuming that weights of adult men 10 are normally distributed with a mean of 179.8 lb and a standard deviation of 37.6 lb, what is the probability that the aircraft is overloaded? (Round your answer to three decimal places; add trailing zeros as needed.) 11 P(aircraft is overloaded) = [OLProb]. 12 P[the aircraft is overloaded] = type your answer.. 13 14 Submit 15 - Type here to search 62OF Sunny ~ 90 * 11:22 AM 10/11/2022 19