Question

4. The Precision Scientific Instrument Company manufacturers 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 and some give readings above 0°C. 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. If 10.2% of the thermometers are rejected because they have readings that are too high and another 10.2% 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.

Answer #1

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
0.08 C. Also assume that...

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...

Assume that the readings on the thermometers are normally
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1.00degrees C. Assume 2.7 % of the thermometers are rejected
because they have readings that are too high and another 2.7 % are
rejected because they have readings that are too low. Draw a sketch
and find the two readings that are cutoff values separating the
rejected thermometers from the others.
The cutoff values are ____? degrees.

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The probability is____.
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A.) Let XX represent the full height of a certain species of
tree. Assume that XX has a normal probability distribution with a
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A tree of this type grows in my backyard, and it stands 98.1 feet
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I would prefer to use technology over tables if possible- please
show me how/what to enter into Excel. Thank you!!
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deviation of 296. The local college includes a minimum score of
1773 in its admission requirements.
What percentage of students from this school earn scores that fail
to satisfy the admission requirement? (Where on the...

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