Question Answered step-by-step a) How many thermometers can the firm expect to not be defective… Image transcription textA firm that manufactures thermometers does regular inspections before distributing its product. It is noted thatthere is a 25% chance that a thermometer is defective. Let the random variable X be the number of defectivethermometers amongst a randomly selected sample. Suppose the firm selects a sample of 25 the… Show more… Show morea) How many thermometers can the firm expect to not be defective during their inspection?b) Calculate the probability that 7 thermometers will be found to be defective. c) Calculate the probability that there will be less than 12 defective thermometers.d) Calculate the standard deviation of the random variable X.e) Suppose that the manufacturer is interested in calculating the probability that the number of defective thermometers is within 1.6 standard deviations from the mean of X. Complete the probability expression that can be used in calculating the above interest:P(___ ?X?___) Math Statistics and Probability WST 111 Share QuestionEmailCopy link Comments (0)