Problems Chapter 7 1. A population of 1‚000 students spends an average of $10.50 a day on dinner. The standard deviation of the expenditure is $3. A simple random sample of 64 students is taken. a. What are the expected value‚ standard deviation‚ and shape of the sampling distribution of the sample mean? b. What is the probability that these 64 students will spend a combined total of more than $715.21? c. What is the probability that these 64 students will spend a combined
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A researcher predicts that watching a film on institutionalization will change students’ attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students‚ shows them the film‚ and gives them a questionnaire about their attitudes. The mean score on the questionnaire for these 36 students is 70. The score for a similar class of students who did not see the film is 75. The standard deviation is 12. Using the five steps of hypothesis testing and the 5% significance
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one another. Being accepted by the family makes people feel assured that they are loved. Diversity in a family also is a part of acceptance‚ which makes them feel more comfortable. Diversity may also cause conflict‚ not only in a family but also in social situations. There are many different qualities that make up a family. Love isn’t just an emotion; it’s a feeling and a sense of comfort. Being surrounded by a family that loves one another is one of the best feelings in the world. Love is the one
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Conclusion Psychological motives are basically caused due to some psychological needs and are not based on physical needs. It is very important in the development of the individuals’ personality. It related to self-esteem‚ self-security‚ self-expression and self-freedom. There are some several psychological needs‚ which are; 1. Need for Affiliation: It is the desire to be with others and have harmonious and satisfying relationships with them. 2. Need for Approval: It is the need for approval
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Thesis Writing: Conceptual Framework Conceptual Framework From the review of related literature and studies‚ the researcher may formulate a theoretical scheme for his research problem. This scheme is a tentative explanation or theoretical explanation of the phenomenon or problem and serves as the basis for the formulation research hypotheses. Thus‚ the conceptual framework consists of the investigator’s own position on a problem after his exposure to various theories that have bearing on the
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Cornesia Rogers The Psychological Stages of Grief The words sorrow and heartache are often used to describe the feelings of grief. Grief can be associated with the death of a loved one and/or family pet. Grief is a natural response to loss. It is the emotional suffering you feel when something or someone you love is taken away. The more significant the loss‚ the more intense the grief will be. Regardless‚ when losing someone or something valuable‚ some level of grief will follow. According to
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Modelling 2 Week 3: Discrete Random Variables Stephen Bush Department of Mathematical Sciences MM2: Statistics - Week 3 - 1 Random Variables • Reference: Devore § 3.1 – 3.5 • Definitions: • An experiment is any process of obtaining one outcome where the outcome is uncertain. • A random variable is a numerical variable whose value can change from one replicate of the experiment to another. • Sample means and sample standard deviations are random variables • They are different from sample
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Variable Geometry Turbocharger Turbochargers works on the simple principle of increasing the intake air density by compression. Being able to fill more air into the combustion chamber will allow more fuel to be added to produce more power. However the operation of the turbocharger relies solely on the exhaust gas velocity to drive the compressor. Thus the compressor will be at optimum operation range when the engine is under heavy load. When the throttle is opened‚ it will take a certain period
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So yes‚ I believe that this experiment can cause a lot of psychological harm. The stress that the participants endured was great enough to cause psychological harm. They had signs of tension which were trembling‚ sweating‚ stuttering‚ nervous laughs‚ biting lips‚ digging fingernails into their palm‚ etc. People could have had very uncontrollable seizures. Stopping
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-1 Name: Lab 1: Dependent and Independent Variables Lab Results Table 1: Average Yield for each seed variety at no‚ low‚ and high infestation levels (8 points) Seed Variety Level of ECB Infestation Pot 1 Yield Pot 2 Yield Pot 3 Yield Average Yield BT 123 None 160.1 164.8 164.2 163.03 Low 164.0 162.6 168.3 164.97 High 155.1 163.0 163.9 167.67 BT 456 None 190 183.2 184.8 186 Low 178.8 172.6 179.6 177 High 157.3 157.0 159.0 157
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