Probability distribution
Not what you're looking for?
1. Find the area under the normal curve which is shaded on the graph. Use 4 decimal places.
2. For a standard normal distribution, find the percentage of data that are more than 1 standard deviation away from the mean. Use two decimal places. For example, 12.34% should be written as 12.34
3. The Precision Scientific Instrument Company manufactures thermometers which are supposed to give readings of 0o 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 0o C (denoted by negative numbers) and some give readings above 0o C (denoted by positive numbers). Assume that the mean reading is 0o C and the standard deviation of the readings is 1o C. Also assume that the frequency distribution of errors closely resembles the normal distribution. If 9% of the thermometers are rejected because they have readings that are too high, but all other thermometers are acceptable, find the temperature that separates the rejected thermometers from the others. Use two decimal places. Do not use any words or the degree symbol in your answer.
4. The amount of snowfall falling in a certain mountain range is normally distributed with a mean of 89 and a standard deviation of 16 inches. What is the probability that the mean annual snowfall during 64 randomly picked years will exceed 91.8 inches? Use 4 decimal places.
5. An airline experiences a no-show rate of 6%. What is the maximum number of reservations that it could accept for a flight with a capacity of 160, if it wants the probability of accommodating all reservation holders to be at least 95%.
Purchase this Solution
Solution Summary
The solution solves for the different probabilities in the given question using EXCEL functions. The standard distribution tables are not needed to solve the questions below. All the answers are calculated using built-in Excel formulas.
Solution Preview
Hello,
Please find my response below. From your questions, it seems like you just want the answers without any explanations. So I am going to ...
Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.