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Temperature Readings: The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0°C at the freezing point of water

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Temperature Readings: The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0°C 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 0°C (denoted by negative numbers) and some give readings above 0°C (denoted by positive numbers). Assume that the mean reading is 0°C 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 P40, the 40th percentile. Round to one decimal place if necessary.