Hello please can you help me answer these questions if it’s A, B, C or D? Thank you MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. If Z is a standard normal variable, find the probability. 1) The probability that Z lies between 0.7 and 1.98 1) A) 0.2175 B) 0.2181 C) 1.7341 D) -0.2181 The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of OC at the freezing point of water. Tests on a large sample of these thermometers reveal that at the freezing point of water, some give readings below OC (denoted by negative numbers) and some give readings above OC (denoted by positive numbers). Assume that the mean reading is OC and the standard deviation of the readings is 1.00 C. Also assume that the frequency distribution of errors closely resembles the normal distribution. A thermometer is randomly selected and tested. Find the temperature reading corresponding to the given information. 2) If 6.3% of the thermometers are rejected because they have readings that are too high andanother 2 ) 6.3% are rejected because they have readings that are too low, find the two readings that are cutoff values separating the rejected thermometers from the others. A) -1.53 , 1.53 B) – 1.46 , 1.46 C) – 1.39 , 1.390 D) -1.45 , 1.450 Assume that X has a normal distribution, and find the indicated probability. 3) The mean is p = 60.0 and the standard deviation is a = 4.0. 3) Find the probability that X is less than 53.0. A) 0.5589 B) 0.0401 C) 0.0802 D) 0.9599 Solve the problem. 4) Scores on a test are normally distributed with a mean of 67.3 and a standard deviation of 9.3. Find 4) P81, which separates the bottom 81% from the top 19%. A) 75.5 B) 70.0 C) 0.88 D) 0.291 5) Human body temperatures are normally distributed with a mean of 98.20F and a standard 5) deviation of 0.62F. If 19 people are randomly selected, find the probability that their mean body temperature will be less than 98.50F. A) 0.3343 B) 0.9826 C) 0.0833 D) 0.4826… Show more MathStatistics and Probability
